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  <infoTable>
    <nameOfIssuer>Abbott</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>002824100</cusip>
    <value>19837</value>
    <shrsOrPrnAmt>
      <sshPrnamt>167600</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>167600</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Abbvie</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>00287Y109</cusip>
    <value>39473</value>
    <shrsOrPrnAmt>
      <sshPrnamt>243500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>243500</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Allstate</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>020002101</cusip>
    <value>38685</value>
    <shrsOrPrnAmt>
      <sshPrnamt>279300</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>279300</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Amerco</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>023586100</cusip>
    <value>44982</value>
    <shrsOrPrnAmt>
      <sshPrnamt>75355</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>75355</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Apple</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>037833100</cusip>
    <value>23991</value>
    <shrsOrPrnAmt>
      <sshPrnamt>137400</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>137400</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Ashland</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>044209104</cusip>
    <value>2460</value>
    <shrsOrPrnAmt>
      <sshPrnamt>25000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>25000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Avista</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>05379B107</cusip>
    <value>9255</value>
    <shrsOrPrnAmt>
      <sshPrnamt>205000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>205000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Amryt</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>03217L106</cusip>
    <value>2603</value>
    <shrsOrPrnAmt>
      <sshPrnamt>315182</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>315182</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>CMS Energy</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>125896100</cusip>
    <value>32766</value>
    <shrsOrPrnAmt>
      <sshPrnamt>468500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>468500</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Acorda Theraputics</nameOfIssuer>
    <titleOfClass>Cv 6.0%</titleOfClass>
    <cusip>00484MAB2</cusip>
    <value>3750</value>
    <shrsOrPrnAmt>
      <sshPrnamt>5000000</sshPrnamt>
      <sshPrnamtType>PRN</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>5000000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Accelerate Diagnostic</nameOfIssuer>
    <titleOfClass>Cv 2.5%</titleOfClass>
    <cusip>00430HAB8</cusip>
    <value>1980</value>
    <shrsOrPrnAmt>
      <sshPrnamt>3000000</sshPrnamt>
      <sshPrnamtType>PRN</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>3000000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Duke Energy</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>26441C204</cusip>
    <value>31957</value>
    <shrsOrPrnAmt>
      <sshPrnamt>286200</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>286200</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>EDAP</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>268311107</cusip>
    <value>4100</value>
    <shrsOrPrnAmt>
      <sshPrnamt>565652</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>565652</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Fate Theraputics</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>31189P102</cusip>
    <value>2209</value>
    <shrsOrPrnAmt>
      <sshPrnamt>57000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>57000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>AT &amp; T</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>00206R102</cusip>
    <value>21786</value>
    <shrsOrPrnAmt>
      <sshPrnamt>922000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>922000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Nextera Energy</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>302571104</cusip>
    <value>41507</value>
    <shrsOrPrnAmt>
      <sshPrnamt>490000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>490000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Novavax</nameOfIssuer>
    <titleOfClass>Cv 3.75%</titleOfClass>
    <cusip>670002AB0</cusip>
    <value>642</value>
    <shrsOrPrnAmt>
      <sshPrnamt>600000</sshPrnamt>
      <sshPrnamtType>PRN</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>600000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>GE</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>369604103</cusip>
    <value>9550</value>
    <shrsOrPrnAmt>
      <sshPrnamt>104375</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>104375</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Newmont</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>651639106</cusip>
    <value>5164</value>
    <shrsOrPrnAmt>
      <sshPrnamt>65000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>65000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>IGM Bioscience</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>449585108</cusip>
    <value>1470</value>
    <shrsOrPrnAmt>
      <sshPrnamt>55000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>55000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Organon</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>68622V106</cusip>
    <value>1116</value>
    <shrsOrPrnAmt>
      <sshPrnamt>31970</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>31970</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Mannkind</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>56400P706</cusip>
    <value>1453</value>
    <shrsOrPrnAmt>
      <sshPrnamt>395073</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>395073</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Merck</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>589331107</cusip>
    <value>26559</value>
    <shrsOrPrnAmt>
      <sshPrnamt>323700</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>323700</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Paratek</nameOfIssuer>
    <titleOfClass>Cv 4.75%</titleOfClass>
    <cusip>699374AA2</cusip>
    <value>14608</value>
    <shrsOrPrnAmt>
      <sshPrnamt>16600000</sshPrnamt>
      <sshPrnamtType>PRN</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>16600000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Paratek</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>699374302</cusip>
    <value>4625</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1557312</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>1557312</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Pfizer</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>717081103</cusip>
    <value>28095</value>
    <shrsOrPrnAmt>
      <sshPrnamt>542700</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>542700</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>RLI</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>749607107</cusip>
    <value>269</value>
    <shrsOrPrnAmt>
      <sshPrnamt>2400</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>2400</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Supernus</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>868459108</cusip>
    <value>7178</value>
    <shrsOrPrnAmt>
      <sshPrnamt>222105</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>222105</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Viatris</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>92556V106</cusip>
    <value>669</value>
    <shrsOrPrnAmt>
      <sshPrnamt>61512</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>61512</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>Bausch Health</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>91911K102</cusip>
    <value>31555</value>
    <shrsOrPrnAmt>
      <sshPrnamt>1381000</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>1381000</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>XM Sirius</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>82968B103</cusip>
    <value>5016</value>
    <shrsOrPrnAmt>
      <sshPrnamt>757843</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>757843</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
  <infoTable>
    <nameOfIssuer>XEL Energy</nameOfIssuer>
    <titleOfClass>Common</titleOfClass>
    <cusip>98389B100</cusip>
    <value>29770</value>
    <shrsOrPrnAmt>
      <sshPrnamt>412500</sshPrnamt>
      <sshPrnamtType>SH</sshPrnamtType>
    </shrsOrPrnAmt>
    <investmentDiscretion>SOLE</investmentDiscretion>
    <votingAuthority>
      <Sole>412500</Sole>
      <Shared>0</Shared>
      <None>0</None>
    </votingAuthority>
  </infoTable>
</informationTable>
