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		<nameOfIssuer>THE BANK OF NOVA SCOTIA </nameOfIssuer>
		<titleOfClass>PREFER</titleOfClass>
		<cusip>064149628</cusip>
		<value>214</value>
		<shrsOrPrnAmt>
			<sshPrnamt>11400</sshPrnamt>
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		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>11400</Sole>
			<Shared>0</Shared>
			<None>0</None>
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	<infoTable>
		<nameOfIssuer>BANK OF MONTREAL</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>063671101</cusip>
		<value>1128</value>
		<shrsOrPrnAmt>
			<sshPrnamt>13701</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
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			<Sole>13701</Sole>
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			<None>0</None>
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	<infoTable>
		<nameOfIssuer>BROOKFIELD ASSET MANAGEMENT IN</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>112585104</cusip>
		<value>17546</value>
		<shrsOrPrnAmt>
			<sshPrnamt>395091</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
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		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>395091</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>CANADIAN NATIONAL RAILWAY COMP</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>136375102</cusip>
		<value>247</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2755</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
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		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2755</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>CANADIAN NATURAL RESOURCES LIM</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>136385101</cusip>
		<value>18618</value>
		<shrsOrPrnAmt>
			<sshPrnamt>571104</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>571104</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>ROYAL BANK OF CANADA</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>780087102</cusip>
		<value>1321</value>
		<shrsOrPrnAmt>
			<sshPrnamt>16517</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>16517</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>SCOTIA INVESTMENTS LTD 8.25P 1</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>80927T108</cusip>
		<value>10</value>
		<shrsOrPrnAmt>
			<sshPrnamt>15000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>15000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>SUNCOR ENERGY INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>867224107</cusip>
		<value>3013</value>
		<shrsOrPrnAmt>
			<sshPrnamt>78035</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>78035</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>THE BANK NOVA SCOTIA</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>064149107</cusip>
		<value>406</value>
		<shrsOrPrnAmt>
			<sshPrnamt>6828</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>6828</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>THE TORONTO DOMINION BANK</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>891160509</cusip>
		<value>3197</value>
		<shrsOrPrnAmt>
			<sshPrnamt>52723</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>52723</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>TUCOWS INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>898697206</cusip>
		<value>229</value>
		<shrsOrPrnAmt>
			<sshPrnamt>4120</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>4120</Sole>
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			<None>0</None>
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		<nameOfIssuer>3M CO COM</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>88579Y101</cusip>
		<value>8688</value>
		<shrsOrPrnAmt>
			<sshPrnamt>41230</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>41230</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>AIRBUS GROUP SE ADR</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>009279100</cusip>
		<value>11060</value>
		<shrsOrPrnAmt>
			<sshPrnamt>352096</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>352096</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>ALPHABET INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>02079K305</cusip>
		<value>9923</value>
		<shrsOrPrnAmt>
			<sshPrnamt>8221</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>8221</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>AMERICAN EXPRESS COMPANY</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>025816109</cusip>
		<value>1038</value>
		<shrsOrPrnAmt>
			<sshPrnamt>9750</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>9750</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ANHEUSER-BUSCH INBEV SA/NV ADR</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>03524A108</cusip>
		<value>470</value>
		<shrsOrPrnAmt>
			<sshPrnamt>5370</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>5370</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>APACHE CORPORATION</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>037411105</cusip>
		<value>34350</value>
		<shrsOrPrnAmt>
			<sshPrnamt>720581</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>720581</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>APPLE INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>037833100</cusip>
		<value>19619</value>
		<shrsOrPrnAmt>
			<sshPrnamt>86909</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>86909</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>BERKSHIRE HATHAWAY INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>084670108</cusip>
		<value>3200</value>
		<shrsOrPrnAmt>
			<sshPrnamt>10</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>10</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>BERKSHIRE HATHAWAY INC. CL B</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>084670702</cusip>
		<value>24320</value>
		<shrsOrPrnAmt>
			<sshPrnamt>113585</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>113585</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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	<infoTable>
		<nameOfIssuer>BROOKFIELD ASSET MANAGEMENT IN</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>112585104</cusip>
		<value>664</value>
		<shrsOrPrnAmt>
			<sshPrnamt>14920</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>14920</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CAPITAL ONE FINANCIAL CORPORAT</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>14040H105</cusip>
		<value>380</value>
		<shrsOrPrnAmt>
			<sshPrnamt>4000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>4000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>CME GROUP INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>12572Q105</cusip>
		<value>15404</value>
		<shrsOrPrnAmt>
			<sshPrnamt>90502</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>90502</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DENTSPLY SIRONA INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>24906P109</cusip>
		<value>28582</value>
		<shrsOrPrnAmt>
			<sshPrnamt>757352</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>757352</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>DIAGEO PLC ADR</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>25243Q205</cusip>
		<value>7499</value>
		<shrsOrPrnAmt>
			<sshPrnamt>52935</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>52935</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>EDWARDS LIFESCIENCES CORPORATI</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>28176E108</cusip>
		<value>207</value>
		<shrsOrPrnAmt>
			<sshPrnamt>1188</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>1188</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>ILLINOIS TOOL WKS INC COM</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>452308109</cusip>
		<value>429</value>
		<shrsOrPrnAmt>
			<sshPrnamt>3040</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>3040</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
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		<nameOfIssuer>INTERNATIONAL BUSINESS MACHINE</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>459200101</cusip>
		<value>8536</value>
		<shrsOrPrnAmt>
			<sshPrnamt>56449</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>56449</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>JARDINE STRATEGIC HOLDINGS LIM</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>G50764102</cusip>
		<value>3536</value>
		<shrsOrPrnAmt>
			<sshPrnamt>97410</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>97410</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>JOHNSON &amp; JOHNSON</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>478160104</cusip>
		<value>17669</value>
		<shrsOrPrnAmt>
			<sshPrnamt>127876</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>127876</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>MASTERCARD INCORPORATED</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>57636Q104</cusip>
		<value>13453</value>
		<shrsOrPrnAmt>
			<sshPrnamt>60435</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>60435</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>MICROSOFT CORPORATION</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>594918104</cusip>
		<value>18504</value>
		<shrsOrPrnAmt>
			<sshPrnamt>161794</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>161794</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>RESMED INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>761152107</cusip>
		<value>346</value>
		<shrsOrPrnAmt>
			<sshPrnamt>3000</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>3000</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>STRYKER CORP.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>863667101</cusip>
		<value>471</value>
		<shrsOrPrnAmt>
			<sshPrnamt>2650</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>2650</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>TUCOWS INC.</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>898697206</cusip>
		<value>7316</value>
		<shrsOrPrnAmt>
			<sshPrnamt>131224</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>131224</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>U.S. BANCORP DEL COMMON NEW</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>902973304</cusip>
		<value>30096</value>
		<shrsOrPrnAmt>
			<sshPrnamt>569890</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>569890</Sole>
			<Shared>0</Shared>
			<None>0</None>
		</votingAuthority>
	</infoTable>
	<infoTable>
		<nameOfIssuer>VISA INC COM CL A</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>92826C839</cusip>
		<value>719</value>
		<shrsOrPrnAmt>
			<sshPrnamt>4790</sshPrnamt>
			<sshPrnamtType>SH</sshPrnamtType>
		</shrsOrPrnAmt>
		<investmentDiscretion>SOLE</investmentDiscretion>
		<votingAuthority>
			<Sole>4790</Sole>
			<Shared>0</Shared>
			<None>0</None>
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		<nameOfIssuer>WALGREENS BOOTS ALLIANCE, INC.</nameOfIssuer>
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		<nameOfIssuer>WELLS FARGO &amp; COMPANY</nameOfIssuer>
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		<nameOfIssuer>WHIRLPOOL CORPORATION</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>963320106</cusip>
		<value>25515</value>
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		<votingAuthority>
			<Sole>214860</Sole>
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		<nameOfIssuer>NOVARTIS AG</nameOfIssuer>
		<titleOfClass>COM</titleOfClass>
		<cusip>H5820Q150</cusip>
		<value>293</value>
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			<None>0</None>
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