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      <Desc>AWARDS - TO HONOR SCIENTISTS OF GREAT DISTINCTION WHO CONTRIBUTE FUNDAMENTALLY TO ADVANCE AND DIFFUSE KNOWLEDGE OF ORGANIC EVOLUTION AND BIOLOGICAL PRINCIPLES. AWARDS INCLUDE: 1. ASN AWARD FOR DISTINGUISHED ACHIEVEMENT IN THE CONCEPTUAL UNIFICATION OF THE BIOLOGICAL SCIENCES (FORMERLY THE SEWALL WRIGHT AWARD): ACTIVE SENIOR INVESTIGATORS MAKING FUNDAMENTAL CONTRIBUTIONS TO THE SOCIETYS GOALS (INCLUDES A $2,000 AWARD). ONE AWARD WAS GIVEN IN 2024 FOR A TOTAL OF $2,000. 2. ASN DISTINGUISHED NATURALIST AWARD (FORMERLY THE E. O. WILSON AWARD): ACTIVE MID-CAREER INVESTIGATOR WHO HAS MADE SIGNIFICANT CONTRIBUTIONS TO THE KNOWLEDGE OF A PARTICULAR ECOSYSTEM OR GROUP OF ORGANISMS (INCLUDES A $2,000 AWARD). ONE AWARD WAS GIVEN IN 2024 FOR A TOTAL OF $2,000. SEE SCHEDULE O FOR A CONTINUATION OF ALL THE AWARDS</Desc>
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      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>false</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS</Desc>
        <BusinessCd>513190</BusinessCd>
        <TotalRevenueColumnAmt>50217</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>50217</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>CONFERENCE REGISTRATION</Desc>
        <BusinessCd>541700</BusinessCd>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>50217</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>20872</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>20872</RelatedOrExemptFuncIncomeAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>283140</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>226888</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>56252</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>56252</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>56252</RelatedOrExemptFuncIncomeAmt>
      </NetGainOrLossInvestmentsGrp>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>127341</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>127341</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>14500</TotalAmt>
        <ProgramServicesAmt>14500</ProgramServicesAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>8532</TotalAmt>
        <ProgramServicesAmt>8532</ProgramServicesAmt>
      </ForeignGrantsGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>1587</TotalAmt>
        <ManagementAndGeneralAmt>1587</ManagementAndGeneralAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>780</TotalAmt>
        <ManagementAndGeneralAmt>780</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>17560</TotalAmt>
        <ManagementAndGeneralAmt>17560</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <TravelGrp>
        <TotalAmt>9081</TotalAmt>
        <ProgramServicesAmt>9081</ProgramServicesAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>72174</TotalAmt>
        <ProgramServicesAmt>72174</ProgramServicesAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>3236</TotalAmt>
        <ManagementAndGeneralAmt>3236</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>PARTICIPANT AWARDS</Desc>
        <TotalAmt>31600</TotalAmt>
        <ProgramServicesAmt>31600</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BANK FEES</Desc>
        <TotalAmt>75</TotalAmt>
        <ProgramServicesAmt>75</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>SUPPLIES</Desc>
        <TotalAmt>394</TotalAmt>
        <ProgramServicesAmt>394</ProgramServicesAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>125</TotalAmt>
        <ProgramServicesAmt>125</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>159644</TotalAmt>
        <ProgramServicesAmt>136481</ProgramServicesAmt>
        <ManagementAndGeneralAmt>23163</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>87081</BOYAmt>
        <EOYAmt>25345</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>1210890</BOYAmt>
        <EOYAmt>1376228</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>1297971</BOYAmt>
        <EOYAmt>1401573</EOYAmt>
      </TotalAssetsGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
      <RtnEarnEndowmentIncmOthFndsGrp>
        <BOYAmt>1297971</BOYAmt>
        <EOYAmt>1401573</EOYAmt>
      </RtnEarnEndowmentIncmOthFndsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>1297971</BOYAmt>
        <EOYAmt>1401573</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>1297971</BOYAmt>
        <EOYAmt>1401573</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-32303</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>135905</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>false</FSAuditedInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="990A">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>35278</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>10483</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1000</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>46761</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>118098</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>47492</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>46326</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>150796</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>50217</CurrentTaxYearAmt>
        <TotalAmt>412929</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>153376</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>57975</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>47326</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>150796</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>50217</CurrentTaxYearAmt>
        <TotalAmt>459690</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <CurrentTaxYearMinus4YearsAmt>15000</CurrentTaxYearMinus4YearsAmt>
        <TotalAmt>15000</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <CurrentTaxYearMinus4YearsAmt>15000</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>15000</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>444690</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>15447</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>16510</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>17101</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>49058</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>15447</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>16510</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>17101</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>49058</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>168823</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>74485</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>64427</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>150796</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>50217</CurrentTaxYearAmt>
        <TotalAmt>508748</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.87410</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.77150</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.10000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.19000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleI documentId="990I">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>ASN GRADUATE STUDENT GRANTS</GrantTypeTxt>
        <RecipientCnt>22</RecipientCnt>
        <CashGrantAmt>14500</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Monitoring procedures (Part I, line 2)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD HAS ESTABLISHED A MONITORING PLAN THAT ALIGNS WITH GRANT REQUIREMENTS, TAILORS TO RECIPIENT GOALS, ADDRESSES RISKS AND ALLOCATES RESOURCES APPROPRIATELY. THE BOARD CAREFULLY DEFINES MEASURABLE OBJECTIVES AND COMMUICATES ITS EXPECTATIONS TO THEIR RECEPIENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="990O">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Members or stockholder classes and rights Part VI line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE ARE MULTIPLE CATEGORIES OF MEMBERS, EACH OF WHICH CARRIES ELECTRONICACCESS TO THE AMERICAN NATURALIST, THE RIGHT TO VOTE IN ASN ELECTIONS, ANDALL OTHER PRIVILEGES OF MEMBERSHIP. ALL MEMBERS IN GOOD STANDING HAVEVOTING RIGHTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Member election for additional members Part VI line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PRESIDENT ELECT AND VICE PRESIDENT SHALL BE ELECTED BY A BALLOT OF THE MEMBERSHIP FROM A SLATE OF AT LEAST TWO CANDIDATES FOR EACH OFFICE. THE SECRETARY AND TREASURER SHALL BE ELECTED BY A BALLOT OF THE MEMBERSHIP FROM A SLATE OF AT LEAST ONE CANDIDATE FOR EACH OFFICE. THE CANDIDATES SHALL BE SELECTED BY THE NOMINATING COMMITTEE.NOMINATIONS FOR VACANCIES IN THE EXECUTIVE COMMITTEE SHALL BE MADE BY THEMOST RECENT NOMINATING COMMITTEE, IF NO NEW ONE HAD BEEN APPOINTED BY THEPRESIDENT PRIOR TO THE VACANCY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing body decisions Part VI line 7b</FormAndLineReferenceDesc>
        <ExplanationTxt>SPECIAL BUSINESS AND/OR SCIENTIFIC MEETINGS MAY BE CALLED AT ANY TIME BY AVOTE OF THE SOCIETY.BY-LAWS AND AMENDMENTS TO THE CONSTITUTION MAY BE RECOMMENDED OR APPEALEDBY THE EXECUTIVE COMMITTEE OR BY AT LEAST TWENTY MEMBERS, BY A MAJORITYVOTE EITHER AT A BUSINESS MEETING OR BY BALLOT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 governing body review Part VI line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>A COPY OF THE FORM 990 IS REVIEWED BY THE TREASURER. CHANGES, IF ANY, AREINCORPORATED AND THE FORM 990 IS FINALIZED FOR SUBMISSION TO THE IRS. ACOPY OF THE FORM 990 IS THEN MADE AVAILABLE TO THE REST OF THE EXECUTIVECOUNCIL.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing documents etc available to public Part VI line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATIONS GOVERNING DOCUMENTS ARE AVAILABLE TO THE PUBLIC UPONWRITTEN REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>List of other fees for services expenses Part IX line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTING - $8,000PROFESSIONAL DUES - $17,410</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>