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    <nameOfIssuer>Alexandria Real Estate Equities, Inc.</nameOfIssuer>
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    <nameOfIssuer>American Homes 4 Rent</nameOfIssuer>
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    <nameOfIssuer>American Tower Corp.</nameOfIssuer>
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    <nameOfIssuer>Americold Realty Trust</nameOfIssuer>
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    <nameOfIssuer>Apartment Income REIT Corp.</nameOfIssuer>
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    <nameOfIssuer>AvalonBay Communities, Inc.</nameOfIssuer>
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    <nameOfIssuer>Black Stone Minerals, L.P.</nameOfIssuer>
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    <nameOfIssuer>Blackstone Mortgage Trust, Inc.</nameOfIssuer>
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    <nameOfIssuer>Cousins Properties, Inc.</nameOfIssuer>
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    <nameOfIssuer>Enterprise Products Partners LP</nameOfIssuer>
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    <nameOfIssuer>Gaming and Leisure Properties, Inc.</nameOfIssuer>
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    <nameOfIssuer>Hannon Armstrong Sustainable Infrastructure</nameOfIssuer>
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    <nameOfIssuer>Host Hotels &amp; Resorts, Inc.</nameOfIssuer>
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    <nameOfIssuer>Iron Mountain, Inc.</nameOfIssuer>
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    <nameOfIssuer>Kilroy Realty Corp.</nameOfIssuer>
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    <nameOfIssuer>Kimco Realty Corp.</nameOfIssuer>
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    <nameOfIssuer>Amgen, Inc.</nameOfIssuer>
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    <nameOfIssuer>Antero Midstream Corp.</nameOfIssuer>
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    <shrsOrPrnAmt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>DuPont de Nemours, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
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    <value>464360</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6500</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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    <nameOfIssuer>EOG Resources, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
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    <shrsOrPrnAmt>
      <sshPrnamt>4400</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
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    <nameOfIssuer>Edison International</nameOfIssuer>
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    <shrsOrPrnAmt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
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    <nameOfIssuer>Edwards LifeSciences Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>28176E108</cusip>
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    <votingAuthority>
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    <nameOfIssuer>Enbridge, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
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    <votingAuthority>
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    <nameOfIssuer>Equinix, Inc.</nameOfIssuer>
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    <votingAuthority>
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    <votingAuthority>
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    <nameOfIssuer>FedEx Corp.</nameOfIssuer>
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    <votingAuthority>
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    <nameOfIssuer>Halliburton Co.</nameOfIssuer>
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    <votingAuthority>
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    <votingAuthority>
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    <titleOfClass>STOCK</titleOfClass>
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    <nameOfIssuer>International Paper Co.</nameOfIssuer>
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    <nameOfIssuer>JPMorgan Chase &amp; Co.</nameOfIssuer>
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    <nameOfIssuer>Lockheed Martin Corp.</nameOfIssuer>
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    <titleOfClass>STOCK</titleOfClass>
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    <titleOfClass>STOCK</titleOfClass>
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    <titleOfClass>STOCK</titleOfClass>
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    <titleOfClass>STOCK</titleOfClass>
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    <titleOfClass>STOCK</titleOfClass>
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    <nameOfIssuer>NVIDIA Corp.</nameOfIssuer>
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    <titleOfClass>STOCK</titleOfClass>
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    <nameOfIssuer>Medtronic PLC</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>G5960L103</cusip>
    <value>622779</value>
    <shrsOrPrnAmt>
      <sshPrnamt>7069</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Garmin Ltd.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>H2906T109</cusip>
    <value>104290</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>AbbVie, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>00287Y109</cusip>
    <value>808380</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Blackstone Mortgage Trust, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>09257W100</cusip>
    <value>240668</value>
    <shrsOrPrnAmt>
      <sshPrnamt>11565</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Chevron Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>166764100</cusip>
    <value>865425</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>City Office REIT, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>178587101</cusip>
    <value>55700</value>
    <shrsOrPrnAmt>
      <sshPrnamt>10000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Duke Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>26441C204</cusip>
    <value>269220</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Enbridge, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>29250N105</cusip>
    <value>928750</value>
    <shrsOrPrnAmt>
      <sshPrnamt>25000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Hannon Armstrong Sustainable Infrastructure</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>41068X100</cusip>
    <value>200000</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Kinder Morgan, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>49456B101</cusip>
    <value>688800</value>
    <shrsOrPrnAmt>
      <sshPrnamt>40000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Medical Properties Trust, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>58463J304</cusip>
    <value>46300</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Philip Morris International, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>718172109</cusip>
    <value>780960</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Phillips 66</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>718546104</cusip>
    <value>524590</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Physicians Realty Trust</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>71943U104</cusip>
    <value>27980</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Simon Property Group, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>828806109</cusip>
    <value>461920</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Spirit Realty Capital, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>84860W300</cusip>
    <value>157520</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>TC Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>87807B107</cusip>
    <value>606150</value>
    <shrsOrPrnAmt>
      <sshPrnamt>15000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Verizon Communications, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>92343V104</cusip>
    <value>278925</value>
    <shrsOrPrnAmt>
      <sshPrnamt>7500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Williams Cos, Inc./The</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>969457100</cusip>
    <value>1386775</value>
    <shrsOrPrnAmt>
      <sshPrnamt>42500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Antero Midstream Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>03676B102</cusip>
    <value>708760</value>
    <shrsOrPrnAmt>
      <sshPrnamt>61100</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>BP PLC</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>055622104</cusip>
    <value>2835940</value>
    <shrsOrPrnAmt>
      <sshPrnamt>80361</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Baker Hughes Co.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>05722G100</cusip>
    <value>1375035</value>
    <shrsOrPrnAmt>
      <sshPrnamt>43500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
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    <nameOfIssuer>Black Stone Minerals, L.P.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>09225M101</cusip>
    <value>7436672</value>
    <shrsOrPrnAmt>
      <sshPrnamt>466249</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>CNX Resources Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>12653C108</cusip>
    <value>159480</value>
    <shrsOrPrnAmt>
      <sshPrnamt>9000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Cheniere Energy Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>16411Q101</cusip>
    <value>10029406</value>
    <shrsOrPrnAmt>
      <sshPrnamt>217369</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Cheniere Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>16411R208</cusip>
    <value>6288659</value>
    <shrsOrPrnAmt>
      <sshPrnamt>41275</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Chesapeake Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>165167735</cusip>
    <value>334720</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
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    <nameOfIssuer>Chevron Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>166764100</cusip>
    <value>12553383</value>
    <shrsOrPrnAmt>
      <sshPrnamt>79780</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Crestwood Equity Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>226344208</cusip>
    <value>211840</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Devon Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>25179M103</cusip>
    <value>410890</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Diamondback Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>25278X109</cusip>
    <value>577984</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4400</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Dominion Resources, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>25746U109</cusip>
    <value>869658</value>
    <shrsOrPrnAmt>
      <sshPrnamt>16792</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Duke Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>26441C204</cusip>
    <value>269220</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>EOG Resources, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>26875P101</cusip>
    <value>383374</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3350</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Enbridge, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>29250N105</cusip>
    <value>7713343</value>
    <shrsOrPrnAmt>
      <sshPrnamt>207627</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Energy Transfer LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>29273V100</cusip>
    <value>9288399</value>
    <shrsOrPrnAmt>
      <sshPrnamt>731370</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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  <infoTable>
    <nameOfIssuer>Enterprise Products Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>293792107</cusip>
    <value>13283984</value>
    <shrsOrPrnAmt>
      <sshPrnamt>504136</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Exxon Mobil Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>30231G102</cusip>
    <value>5723933</value>
    <shrsOrPrnAmt>
      <sshPrnamt>53370</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Hess Midstream LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>428103105</cusip>
    <value>7204799</value>
    <shrsOrPrnAmt>
      <sshPrnamt>234837</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Holly Energy Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>435763107</cusip>
    <value>692252</value>
    <shrsOrPrnAmt>
      <sshPrnamt>37419</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Kinder Morgan, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>49456B101</cusip>
    <value>6156047</value>
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      <sshPrnamt>357494</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
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    <nameOfIssuer>MPLX LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>55336V100</cusip>
    <value>14302214</value>
    <shrsOrPrnAmt>
      <sshPrnamt>421397</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Magellan Midstream Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>559080106</cusip>
    <value>13243935</value>
    <shrsOrPrnAmt>
      <sshPrnamt>212515</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Marathon Oil Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>565849106</cusip>
    <value>1260874</value>
    <shrsOrPrnAmt>
      <sshPrnamt>54773</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Marathon Petroleum Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>56585A102</cusip>
    <value>11709089</value>
    <shrsOrPrnAmt>
      <sshPrnamt>100421</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>NextEra Energy Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>65341B106</cusip>
    <value>360636</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Occidental Petroleum Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>674599105</cusip>
    <value>352800</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>ONEOK, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>682680103</cusip>
    <value>5037648</value>
    <shrsOrPrnAmt>
      <sshPrnamt>81621</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>PPL Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>69351T106</cusip>
    <value>535815</value>
    <shrsOrPrnAmt>
      <sshPrnamt>20250</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Phillips 66</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>718546104</cusip>
    <value>12355144</value>
    <shrsOrPrnAmt>
      <sshPrnamt>129536</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Pioneer Natural Resources Co.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>723787107</cusip>
    <value>5199596</value>
    <shrsOrPrnAmt>
      <sshPrnamt>25097</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Plains All American Pipeline LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>726503105</cusip>
    <value>4389330</value>
    <shrsOrPrnAmt>
      <sshPrnamt>311300</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Plains GP Holdings LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>72651A207</cusip>
    <value>252110</value>
    <shrsOrPrnAmt>
      <sshPrnamt>17000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Schlumberger Ltd.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>806857108</cusip>
    <value>49120</value>
    <shrsOrPrnAmt>
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      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Sunoco LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>86765K109</cusip>
    <value>4550887</value>
    <shrsOrPrnAmt>
      <sshPrnamt>104474</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Targa Resources Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>87612G101</cusip>
    <value>3104880</value>
    <shrsOrPrnAmt>
      <sshPrnamt>40800</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>TC Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>87807B107</cusip>
    <value>2906610</value>
    <shrsOrPrnAmt>
      <sshPrnamt>71928</sshPrnamt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
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    <nameOfIssuer>UGI Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>902681105</cusip>
    <value>1272229</value>
    <shrsOrPrnAmt>
      <sshPrnamt>47172</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>USA Compression Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>90290N109</cusip>
    <value>3114656</value>
    <shrsOrPrnAmt>
      <sshPrnamt>157784</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Valero Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>91913Y100</cusip>
    <value>11309949</value>
    <shrsOrPrnAmt>
      <sshPrnamt>96419</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Viper Energy Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>92763M105</cusip>
    <value>528551</value>
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      <sshPrnamt>19700</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Western Midstream Partners LP</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>958669103</cusip>
    <value>4570722</value>
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      <sshPrnamt>172350</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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    </votingAuthority>
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    <nameOfIssuer>Williams Cos, Inc./The</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>969457100</cusip>
    <value>13477234</value>
    <shrsOrPrnAmt>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>AES Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>00130H105</cusip>
    <value>393870</value>
    <shrsOrPrnAmt>
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      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Alliant Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>018802108</cusip>
    <value>112832</value>
    <shrsOrPrnAmt>
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      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Ameren Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>023608102</cusip>
    <value>481853</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5900</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>American Electric Power Co., Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>025537101</cusip>
    <value>547300</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>American Water Works Co., Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>030420103</cusip>
    <value>42825</value>
    <shrsOrPrnAmt>
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      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Atmos Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>049560105</cusip>
    <value>232680</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Brookfield Renewable Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>11284V105</cusip>
    <value>36248</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>CMS Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>125896100</cusip>
    <value>282000</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4800</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>CenterPoint Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>15189T107</cusip>
    <value>320650</value>
    <shrsOrPrnAmt>
      <sshPrnamt>11000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
  </infoTable>
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    <nameOfIssuer>Clearway Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>18539C204</cusip>
    <value>122808</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4300</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
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      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Constellation Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>21037T109</cusip>
    <value>357045</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3900</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>DTE Energy Co.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>233331107</cusip>
    <value>489589</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4450</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Dominion Resources, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>25746U109</cusip>
    <value>134654</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2600</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Duke Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>26441C204</cusip>
    <value>516005</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5750</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
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    <nameOfIssuer>Edison International</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>281020107</cusip>
    <value>177098</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2550</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Entergy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>29364G103</cusip>
    <value>598826</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Essential Utilities, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>29670G102</cusip>
    <value>409078</value>
    <shrsOrPrnAmt>
      <sshPrnamt>10250</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Evergy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>30034W106</cusip>
    <value>46736</value>
    <shrsOrPrnAmt>
      <sshPrnamt>800</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>Eversource Energy</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>30040W108</cusip>
    <value>450342</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6350</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Exelon Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>30161N101</cusip>
    <value>350364</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8600</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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  <infoTable>
    <nameOfIssuer>FirstEnergy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>337932107</cusip>
    <value>353808</value>
    <shrsOrPrnAmt>
      <sshPrnamt>9100</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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    <nameOfIssuer>National Fuel Gas Co.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>636180101</cusip>
    <value>30816</value>
    <shrsOrPrnAmt>
      <sshPrnamt>600</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>NextEra Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>65339F101</cusip>
    <value>753130</value>
    <shrsOrPrnAmt>
      <sshPrnamt>10150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Nisource, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>65473P105</cusip>
    <value>243415</value>
    <shrsOrPrnAmt>
      <sshPrnamt>8900</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Northwest Natural Holdings Co.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>66765N105</cusip>
    <value>53813</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1250</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>NorthWestern Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>668074305</cusip>
    <value>42570</value>
    <shrsOrPrnAmt>
      <sshPrnamt>750</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
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  <infoTable>
    <nameOfIssuer>PPL Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>69351T106</cusip>
    <value>357210</value>
    <shrsOrPrnAmt>
      <sshPrnamt>13500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
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    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Public Service Enterprise Group, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>744573106</cusip>
    <value>444531</value>
    <shrsOrPrnAmt>
      <sshPrnamt>7100</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Sempra Energy</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>816851109</cusip>
    <value>531404</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3650</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Southern Co./The</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>842587107</cusip>
    <value>129963</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1850</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Southwest Gas Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>844895102</cusip>
    <value>136848</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Vistra Energy Corp.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>92840M102</cusip>
    <value>157500</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>WEC Energy Group, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>92939U106</cusip>
    <value>427964</value>
    <shrsOrPrnAmt>
      <sshPrnamt>4850</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Waste Management, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>94106L109</cusip>
    <value>26013</value>
    <shrsOrPrnAmt>
      <sshPrnamt>150</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Williams Cos, Inc./The</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>969457100</cusip>
    <value>65260</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Xcel Energy, Inc.</nameOfIssuer>
    <titleOfClass>STOCK</titleOfClass>
    <cusip>98389B100</cusip>
    <value>385454</value>
    <shrsOrPrnAmt>
      <sshPrnamt>6200</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>0</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
</informationTable>
