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<!--XBRL document created with CrossTag XBRL Enabler by Rivet Software version 2.0.3089.23121-->
<!--Based on XBRL 2.1--> <!--Created on: 6/25/2008 5:20:47 PM--> <!--Modified on: 7/28/2008 5:03:55 PM-->
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef xlink:type="simple"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-roles-2008-03-31.xsd#soc"
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arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" /> <roleRef
xlink:type="simple"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-roles-2008-03-31.xsd#com"
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xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-roles-2008-03-31.xsd#scf-indir"
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xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"
arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" /> <roleRef
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<definitionLink xlink:type="extended"
xlink:role="http://xbrl.us/us-gaap/role/statement/StatementOfFinancialPositionClassified"
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xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_StatementScenarioAxis"
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xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_ScenarioUnspecifiedDomain"
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xlink:type="locator"
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xlink:label="dd_ScenarioUnauditedmember" /> <definitionArc
xlink:type="arc"
xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member"
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xlink:role="http://xbrl.us/us-gaap/role/statement/StatementOfCashFlowsIndirect"
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<loc xlink:type="locator"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_StatementScenarioAxis"
xlink:label="us-gaap_StatementScenarioAxis" /> <loc xlink:type="locator"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_ScenarioUnspecifiedDomain"
xlink:label="us-gaap_ScenarioUnspecifiedDomain" /> <definitionArc
xlink:type="arc"
xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
xlink:from="us-gaap_StatementScenarioAxis"
xlink:to="us-gaap_ScenarioUnspecifiedDomain" order="1" priority="1"
use="prohibited" /> <loc xlink:type="locator"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_ScenarioUnspecifiedDomain"
xlink:label="us-gaap_ScenarioUnspecifiedDomain_633500112477911302" /> <definitionArc
xlink:type="arc"
xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
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xbrldt:targetRole="http://xbrl.us/us-gaap/role/statement/CommonDomainMembers" />
</definitionLink> <definitionLink xlink:type="extended"
xlink:role="http://xbrl.us/us-gaap/role/statement/StatementOfOtherComprehensiveIncome"
xlink:title="http://xbrl.us/us-gaap/role/statement/StatementOfOtherComprehensiveIncome">
<loc xlink:type="locator"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_StatementScenarioAxis"
xlink:label="us-gaap_StatementScenarioAxis" /> <loc xlink:type="locator"
xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_ScenarioUnspecifiedDomain"
xlink:label="us-gaap_ScenarioUnspecifiedDomain" /> <definitionArc
xlink:type="arc"
xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain"
xlink:from="us-gaap_StatementScenarioAxis"
xlink:to="us-gaap_ScenarioUnspecifiedDomain" order="1" priority="1"
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xlink:href="http://xbrl.us/us-gaap/1.0/elts/us-gaap-2008-03-31.xsd#us-gaap_ScenarioUnspecifiedDomain"
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xlink:type="arc"
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xlink:to="us-gaap_ScenarioUnspecifiedDomain_633506086700969157" order="1"
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