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      <Form990ScheduleDPartXIV>
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        <ReturnReference>PART V, LINE 4:</ReturnReference>
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        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>THE INSTITUTE HAS DETERMINED THAT THERE ARE NO MATERIAL UNCERTAIN TAX POSITIONS THAT REQUIRE RECOGNITION OR DISCLOSURE IN THE FINANCIAL STATEMENTS. TAX RETURNS FOR THE YEARS DECEMBER 31, 2007 AND SUBSEQUENT REMAIN SUBJECT TO EXAMINATION BY APPLICABLE TAXING AUTHORITIES.</Explanation>
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      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XII, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>MISCELLANEOUS REVENUE 38,804.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XIII, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>ADJUSTMENT TO REFLECT PENSION FUNDING STATUS 830,109.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Explanation>THE INCOME HAS BEEN BOARD DESIGNATED TO SUPPORT A POSITION IN PLANT MOLECULAR BIOLOGY.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <FirstClassOrCharterTravel>X</FirstClassOrCharterTravel>
      <WrittenPolicyReTAndEExpenses>0</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>1</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <WrittenEmploymentContract>X</WrittenEmploymentContract>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>0</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>0</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>0</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>0</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>DAVID STERN</NamePerson>
        <BaseCompensationFilingOrg>274486</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>15300</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>6000</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>48389</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>31008</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>375183</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>DR ERIC RICHARDS</NamePerson>
        <BaseCompensationFilingOrg>213352</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>6711</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>6711</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>21491</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>248265</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>DR MARIA HARRISON</NamePerson>
        <BaseCompensationFilingOrg>134139</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>16500</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>4123</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>9080</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>163842</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>DR DANIEL KLESSIG</NamePerson>
        <BaseCompensationFilingOrg>231686</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>0</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>231686</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>JOHN DENTES</NamePerson>
        <BaseCompensationFilingOrg>224999</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1938</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>590</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>4744</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>232271</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <ReturnReference>PART I, LINE 1A</ReturnReference>
        <Explanation>PART 1-1A, FIRST CLASS TRAVEL, $15,406, INCURRED FOR PRESIDENT'S PREMIUM AIR TRAVEL NON TAXABLE PART 1-1B, AS PER EMPLOYMENT AGREEMENT PART 1-1B, PAYMENTS ARE AS PER EMPLOYMENT AGREEMENT</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <Form990ScheduleLPartIV>
        <NameOfInterestedPerson>
          <NameBusiness>
            <BusinessNameLine1>RALPH WF HARDY</BusinessNameLine1>
          </NameBusiness>
        </NameOfInterestedPerson>
        <Relationship>FORMER DIRECTOR</Relationship>
        <AmountOfTransaction>52000</AmountOfTransaction>
        <DescriptionOfTransaction>INDEPENDENT</DescriptionOfTransaction>
        <SharingOfRevenues>0</SharingOfRevenues>
      </Form990ScheduleLPartIV>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 2</Identifier>
        <Explanation>THE BOARD CHAIR, MR. CORNELL, HAD A BUSINESS RELATIONSHIP WITH MR. STERN, BTI'S PRESIDENT.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 6</Identifier>
        <Explanation>THE BOYCE THOMPSON INSTITUTE, INC. IS A NYS MEMBERSHIP CORPORATION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 7A</Identifier>
        <Explanation>MEMBERS ELECT DIRECTORS</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION B, LINE 11</Identifier>
        <Explanation>NO REVIEW WILL BE CONDUCTED PRIOR TO FILING, HOWEVER, THE BOARD WILL REVIEW THE 990 AFTER IT HAS BEEN FILED.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>ANNUAL CERTIFICATIONS ARE PROVIDED BY DIRECTORS AND KEY EMPLOYEES TO THE CORPORATE SECRETARY AND DIRECTOR OF HUMAN RESOURCES. CONFLICTS ARE DISCLOSED TO AND REVIEWED BY THE AUDIT COMMITTEE AND BOARD.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>THE BOARD COMPENSATION COMMITTEE ESTABLISHES THE SALARIES OF THE PRESIDENT AND THE VICE PRESIDENT, ANNUALLY. COMPARABLE SALARIES AND COST OF LIVING DATA IS PROVIDED BY THE DIRECTOR OF HUMAN RESOURCES. MEETING MINUTES, RECOMMENDATIONS AND SUPPORTING DATA ARE RETAINED BY THE COPORATE SECRETARY. SALARY REVIEWS ARE PERFORMED ANNUALLY, IN NOVEMBER. THE COMPENSATION COMMITTED MET IN NOVEMBER 2009 TO REVIEW AND SET THE 2010 COMPENSATION FOR THE PRESIDENT, VICE PRESIDENT, AND CFO/VP FOR FINANCE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>DOCUMENTS ARE AVAILABLE ON REQUEST TO THE CORPORATE SECRETARY.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHANGES IN NET ASSETS OR FUND BALANCES:</Identifier>
        <ReturnReference>FORM 990, PART XI, LINE 5:</ReturnReference>
        <Explanation>NET UNREALIZED GAINS ON INVESTMENTS: 4,145,943.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART XI, LINE 2C:</ReturnReference>
        <Explanation>THE BTI AUDIT COMMITTEE IS RESPONSIBLE FOR OVERSIGHT OF THE AUDIT. THIS PROCESS HAS NOT CHANGED FROM PRIOR YEARS.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>