<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2021v4.2">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2023-01-26T03:20:45-06:00</ReturnTs>
    <TaxPeriodEndDt>2022-06-30</TaxPeriodEndDt>
    <ReturnTypeCd>990PF</ReturnTypeCd>
    <TaxPeriodBeginDt>2021-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>208987808</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>The Philecology Foundation</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>PHIL</BusinessNameControlTxt>
      <PhoneNum>8173908400</PhoneNum>
      <USAddress>
        <AddressLine1Txt>201 Main Street 2300</AddressLine1Txt>
        <CityNm>Fort Worth</CityNm>
        <StateAbbreviationCd>TX</StateAbbreviationCd>
        <ZIPCd>76102</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Thomas W White</PersonNm>
      <PersonTitleTxt>Vice President</PersonTitleTxt>
      <PhoneNum>8173908400</PhoneNum>
      <SignatureDt>2023-01-26</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>Thomas</PersonFirstNm>
        <PersonLastNm>White</PersonLastNm>
      </PersonFullName>
      <SSN>999009999</SSN>
    </SigningOfficerGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>3</TrustedCustomerCd>
        <AuthenticationAssuranceLevelCd>AAL1</AuthenticationAssuranceLevelCd>
        <IdentityAssuranceLevelCd>IAL1</IdentityAssuranceLevelCd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2021</TaxYr>
    <BuildTS>2023-03-07 01:45:13Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="9">
    <IRS990PF documentId="RetDoc1235000001">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <FMVAssetsEOYAmt>429598012</FMVAssetsEOYAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AnalysisOfRevenueAndExpenses>
        <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
        <InterestOnSavRevAndExpnssAmt>2639898</InterestOnSavRevAndExpnssAmt>
        <InterestOnSavNetInvstIncmAmt>1355535</InterestOnSavNetInvstIncmAmt>
        <DividendsRevAndExpnssAmt>7</DividendsRevAndExpnssAmt>
        <DividendsNetInvstIncmAmt>7</DividendsNetInvstIncmAmt>
        <CapGainNetIncmNetInvstIncmAmt>0</CapGainNetIncmNetInvstIncmAmt>
        <OtherIncomeRevAndExpnssAmt referenceDocumentId="RetDoc2001500001">53516357</OtherIncomeRevAndExpnssAmt>
        <OtherIncomeNetInvstIncmAmt>53516357</OtherIncomeNetInvstIncmAmt>
        <OtherIncomeAdjNetIncmAmt>0</OtherIncomeAdjNetIncmAmt>
        <TotalRevAndExpnssAmt>56156262</TotalRevAndExpnssAmt>
        <TotalNetInvstIncmAmt>54871899</TotalNetInvstIncmAmt>
        <TotalAdjNetIncmAmt>0</TotalAdjNetIncmAmt>
        <CompOfcrDirTrstRevAndExpnssAmt>0</CompOfcrDirTrstRevAndExpnssAmt>
        <CompOfcrDirTrstNetInvstIncmAmt>0</CompOfcrDirTrstNetInvstIncmAmt>
        <CompOfcrDirTrstAdjNetIncmAmt>0</CompOfcrDirTrstAdjNetIncmAmt>
        <CompOfcrDirTrstDsbrsChrtblAmt>0</CompOfcrDirTrstDsbrsChrtblAmt>
        <LegalFeesRevAndExpnssAmt referenceDocumentId="RetDoc2002100001">49925</LegalFeesRevAndExpnssAmt>
        <LegalFeesNetInvstIncmAmt>49925</LegalFeesNetInvstIncmAmt>
        <LegalFeesAdjNetIncmAmt>0</LegalFeesAdjNetIncmAmt>
        <LegalFeesDsbrsChrtblAmt>0</LegalFeesDsbrsChrtblAmt>
        <InterestRevAndExpnssAmt>740935</InterestRevAndExpnssAmt>
        <InterestNetInvstIncmAmt>255326</InterestNetInvstIncmAmt>
        <InterestAdjNetIncmAmt>0</InterestAdjNetIncmAmt>
        <InterestDsbrsChrtblAmt>0</InterestDsbrsChrtblAmt>
        <TaxesRevAndExpnssAmt referenceDocumentId="RetDoc2002500001">888687</TaxesRevAndExpnssAmt>
        <TaxesNetInvstIncmAmt>5020</TaxesNetInvstIncmAmt>
        <TaxesAdjNetIncmAmt>0</TaxesAdjNetIncmAmt>
        <TaxesDsbrsChrtblAmt>0</TaxesDsbrsChrtblAmt>
        <OtherExpensesRevAndExpnssAmt referenceDocumentId="RetDoc2003200001">1755729</OtherExpensesRevAndExpnssAmt>
        <OtherExpensesNetInvstIncmAmt>27729</OtherExpensesNetInvstIncmAmt>
        <OtherExpensesAdjNetIncmAmt>0</OtherExpensesAdjNetIncmAmt>
        <OtherExpensesDsbrsChrtblAmt>0</OtherExpensesDsbrsChrtblAmt>
        <TotOprExpensesRevAndExpnssAmt>3435276</TotOprExpensesRevAndExpnssAmt>
        <TotOprExpensesNetInvstIncmAmt>338000</TotOprExpensesNetInvstIncmAmt>
        <TotOprExpensesAdjNetIncmAmt>0</TotOprExpensesAdjNetIncmAmt>
        <TotOprExpensesDsbrsChrtblAmt>0</TotOprExpensesDsbrsChrtblAmt>
        <ContriPaidRevAndExpnssAmt>120000</ContriPaidRevAndExpnssAmt>
        <ContriPaidDsbrsChrtblAmt>120000</ContriPaidDsbrsChrtblAmt>
        <TotalExpensesRevAndExpnssAmt>3555276</TotalExpensesRevAndExpnssAmt>
        <TotalExpensesNetInvstIncmAmt>338000</TotalExpensesNetInvstIncmAmt>
        <TotalExpensesAdjNetIncmAmt>0</TotalExpensesAdjNetIncmAmt>
        <TotalExpensesDsbrsChrtblAmt>120000</TotalExpensesDsbrsChrtblAmt>
        <ExcessRevenueOverExpensesAmt>52600986</ExcessRevenueOverExpensesAmt>
        <NetInvestmentIncomeAmt>54533899</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
      </AnalysisOfRevenueAndExpenses>
      <Form990PFBalanceSheetsGrp>
        <SavAndTempCashInvstBOYAmt>2397786</SavAndTempCashInvstBOYAmt>
        <SavAndTempCashInvstEOYAmt>15640395</SavAndTempCashInvstEOYAmt>
        <SavAndTempCashInvstEOYFMVAmt>15640395</SavAndTempCashInvstEOYFMVAmt>
        <AcctRcvblAmt>13673272</AcctRcvblAmt>
        <AcctRcvblBOYAmt>2702067</AcctRcvblBOYAmt>
        <AcctRcvblEOYAmt>13673272</AcctRcvblEOYAmt>
        <AcctRcvblEOYFMVAmt>13673272</AcctRcvblEOYFMVAmt>
        <OtherNtsAndLoansRcvblAmt>60075748</OtherNtsAndLoansRcvblAmt>
        <OtherRcvblAllwncDbtflAcctAmt>0</OtherRcvblAllwncDbtflAcctAmt>
        <OtherNtsAndLoansRcvblBOYAmt>70088373</OtherNtsAndLoansRcvblBOYAmt>
        <OtherNtsAndLoansRcvblEOYAmt>60075748</OtherNtsAndLoansRcvblEOYAmt>
        <OtherNtsAndLoansRcvblEOYFMVAmt>60075748</OtherNtsAndLoansRcvblEOYFMVAmt>
        <CorporateStockBOYAmt>107480</CorporateStockBOYAmt>
        <CorporateStockEOYAmt referenceDocumentId="RetDoc2018900001">107480</CorporateStockEOYAmt>
        <CorporateStockEOYFMVAmt>160102</CorporateStockEOYFMVAmt>
        <OtherAssetsBOYAmt referenceDocumentId="RetDoc2046600001">702577</OtherAssetsBOYAmt>
        <OtherAssetsEOYAmt referenceDocumentId="RetDoc2046600001">340046</OtherAssetsEOYAmt>
        <OtherAssetsEOYFMVAmt referenceDocumentId="RetDoc2046600001">340048495</OtherAssetsEOYFMVAmt>
        <TotalAssetsBOYAmt>75998283</TotalAssetsBOYAmt>
        <TotalAssetsEOYAmt>89836941</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>429598012</TotalAssetsEOYFMVAmt>
        <MortgagesAndNotesPayableBOYAmt>57822241</MortgagesAndNotesPayableBOYAmt>
        <MortgagesAndNotesPayableEOYAmt>19108016</MortgagesAndNotesPayableEOYAmt>
        <OtherLiabilitiesBOYAmt referenceDocumentId="RetDoc2065700001">44837</OtherLiabilitiesBOYAmt>
        <OtherLiabilitiesEOYAmt referenceDocumentId="RetDoc2065700001">0</OtherLiabilitiesEOYAmt>
        <TotalLiabilitiesBOYAmt>57867078</TotalLiabilitiesBOYAmt>
        <TotalLiabilitiesEOYAmt>19108016</TotalLiabilitiesEOYAmt>
        <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
        <CapitalStockBOYAmt>0</CapitalStockBOYAmt>
        <CapitalStockEOYAmt>0</CapitalStockEOYAmt>
        <AdditionalPaidInCapitalBOYAmt>0</AdditionalPaidInCapitalBOYAmt>
        <AdditionalPaidInCapitalEOYAmt>0</AdditionalPaidInCapitalEOYAmt>
        <RetainedEarningBOYAmt>18131205</RetainedEarningBOYAmt>
        <RetainedEarningEOYAmt>70728925</RetainedEarningEOYAmt>
        <TotNetAstOrFundBalancesBOYAmt>18131205</TotNetAstOrFundBalancesBOYAmt>
        <TotNetAstOrFundBalancesEOYAmt>70728925</TotNetAstOrFundBalancesEOYAmt>
        <TotalLiabilitiesNetAstBOYAmt>75998283</TotalLiabilitiesNetAstBOYAmt>
        <TotalLiabilitiesNetAstEOYAmt>89836941</TotalLiabilitiesNetAstEOYAmt>
      </Form990PFBalanceSheetsGrp>
      <ChgInNetAssetsFundBalancesGrp>
        <TotNetAstOrFundBalancesBOYAmt>18131205</TotNetAstOrFundBalancesBOYAmt>
        <ExcessRevenueOverExpensesAmt>52600986</ExcessRevenueOverExpensesAmt>
        <OtherIncreasesAmt>0</OtherIncreasesAmt>
        <SubtotalAmt>70732191</SubtotalAmt>
        <OtherDecreasesAmt referenceDocumentId="RetDoc2049800001">3266</OtherDecreasesAmt>
        <TotNetAstOrFundBalancesEOYAmt>70728925</TotNetAstOrFundBalancesEOYAmt>
      </ChgInNetAssetsFundBalancesGrp>
      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>758021</InvestmentIncomeExciseTaxAmt>
        <TaxUnderSection511Amt>0</TaxUnderSection511Amt>
        <SubtotalAmt>758021</SubtotalAmt>
        <SubtitleATaxAmt>0</SubtitleATaxAmt>
        <TaxBasedOnInvestmentIncomeAmt>758021</TaxBasedOnInvestmentIncomeAmt>
        <EstimatedPlusOvpmtIncmTxAmt>743239</EstimatedPlusOvpmtIncmTxAmt>
        <ExemptFrgnOrgTaxWthldAtSrceAmt>0</ExemptFrgnOrgTaxWthldAtSrceAmt>
        <ExtsnRequestIncomeTaxPaidAmt>217000</ExtsnRequestIncomeTaxPaidAmt>
        <BackupWithholdingWithheldAmt>0</BackupWithholdingWithheldAmt>
        <TotalPaymentsAndCreditsAmt>960239</TotalPaymentsAndCreditsAmt>
        <Form2220AttachedInd referenceDocumentId="RetDoc1192000001">X</Form2220AttachedInd>
        <EsPenaltyAmt>0</EsPenaltyAmt>
        <OverpaymentAmt>202218</OverpaymentAmt>
        <AppliedToESTaxAmt>202218</AppliedToESTaxAmt>
        <RefundAmt>0</RefundAmt>
      </ExciseTaxBasedOnInvstIncmGrp>
      <StatementsRegardingActyGrp>
        <LegislativePoliticalActyInd>0</LegislativePoliticalActyInd>
        <MoreThan100SpentInd>0</MoreThan100SpentInd>
        <Form1120POLFiledInd>0</Form1120POLFiledInd>
        <Section4955OrganizationTaxAmt>0</Section4955OrganizationTaxAmt>
        <Section4955ManagersTaxAmt>0</Section4955ManagersTaxAmt>
        <TaxReimbursedAmt>0</TaxReimbursedAmt>
        <ActivitiesNotPreviouslyRptInd>0</ActivitiesNotPreviouslyRptInd>
        <ChangesToArticlesOrBylawsInd>0</ChangesToArticlesOrBylawsInd>
        <UnrelatedBusIncmOverLimitInd>1</UnrelatedBusIncmOverLimitInd>
        <Form990TFiledInd>1</Form990TFiledInd>
        <OrganizationDissolvedEtcInd>0</OrganizationDissolvedEtcInd>
        <Section508eRqrSatisfiedInd>0</Section508eRqrSatisfiedInd>
        <AtLeast5000InAssetsInd>1</AtLeast5000InAssetsInd>
        <OrgReportOrRegisterStateCd>TX</OrgReportOrRegisterStateCd>
        <Form990PFFiledWithAttyGenInd>1</Form990PFFiledWithAttyGenInd>
        <PrivateOperatingFoundationInd>0</PrivateOperatingFoundationInd>
        <NewSubstantialContributorsInd>0</NewSubstantialContributorsInd>
        <OwnControlledEntityInd>0</OwnControlledEntityInd>
        <DonorAdvisedFundInd>0</DonorAdvisedFundInd>
        <ComplyWithPublicInspRqrInd>1</ComplyWithPublicInspRqrInd>
        <WebsiteAddressTxt>N/A</WebsiteAddressTxt>
        <IndividualWithBooksNm>Thomas W White</IndividualWithBooksNm>
        <PhoneNum>8173908400</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>201 Main Street Suite 2600</AddressLine1Txt>
          <CityNm>Fort Worth</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>76102</ZIPCd>
        </LocationOfBooksUSAddress>
        <ForeignAccountsQuestionInd>0</ForeignAccountsQuestionInd>
      </StatementsRegardingActyGrp>
      <StatementsRegardingActy4720Grp>
        <SaleOrExchDisqualifiedPrsnInd>0</SaleOrExchDisqualifiedPrsnInd>
        <BrrwOrLendDisqualifiedPrsnInd>0</BrrwOrLendDisqualifiedPrsnInd>
        <FurnGoodsDisqualifiedPrsnInd>0</FurnGoodsDisqualifiedPrsnInd>
        <PayCompDisqualifiedPrsnInd>0</PayCompDisqualifiedPrsnInd>
        <TransferAstDisqualifiedPrsnInd>0</TransferAstDisqualifiedPrsnInd>
        <PaymentToGovernmentOfficialInd>0</PaymentToGovernmentOfficialInd>
        <UncorrectedPriorActsInd>0</UncorrectedPriorActsInd>
        <UndistributedIncomePYInd>0</UndistributedIncomePYInd>
        <BusinessHoldingsInd>0</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>0</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>0</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>0</InfluenceLegislationInd>
        <InfluenceElectionInd>0</InfluenceElectionInd>
        <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>0</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>Edward P Bass</PersonNm>
          <USAddress>
            <AddressLine1Txt>201 Main Street Suite 2300</AddressLine1Txt>
            <CityNm>Fort Worth</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>76102</ZIPCd>
          </USAddress>
          <TitleTxt>President, Director</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>Gary W Reese</PersonNm>
          <USAddress>
            <AddressLine1Txt>201 Main Street Suite 2300</AddressLine1Txt>
            <CityNm>Fort Worth</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>76102</ZIPCd>
          </USAddress>
          <TitleTxt>VP, Asst Treas</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>Thomas W White</PersonNm>
          <USAddress>
            <AddressLine1Txt>201 Main Street Suite 2300</AddressLine1Txt>
            <CityNm>Fort Worth</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>76102</ZIPCd>
          </USAddress>
          <TitleTxt>VP, Treas, Asst Sec, Direc</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>Dee Steer</PersonNm>
          <USAddress>
            <AddressLine1Txt>201 Main Street Suite 2300</AddressLine1Txt>
            <CityNm>Fort Worth</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>76102</ZIPCd>
          </USAddress>
          <TitleTxt>Secretary, Director</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.50</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <CompOfHghstPdEmplOrNONETxt>NONE</CompOfHghstPdEmplOrNONETxt>
        <OtherEmployeePaidOver50kCnt>0</OtherEmployeePaidOver50kCnt>
        <CompOfHghstPdCntrctOrNONETxt>NONE</CompOfHghstPdCntrctOrNONETxt>
        <ContractorPaidOver50kCnt>0</ContractorPaidOver50kCnt>
      </OfficerDirTrstKeyEmplInfoGrp>
      <SumOfProgramRelatedInvstGrp>
        <TotalAmt>0</TotalAmt>
      </SumOfProgramRelatedInvstGrp>
      <MinimumInvestmentReturnGrp>
        <AverageMonthlyFMVOfSecAmt>251728</AverageMonthlyFMVOfSecAmt>
        <AverageMonthlyCashBalancesAmt>5724271</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>413797515</FMVAllOtherNoncharitableAstAmt>
        <TotalFMVOfUnusedAssetsAmt>419773514</TotalFMVOfUnusedAssetsAmt>
        <ReductionClaimedAmt>0</ReductionClaimedAmt>
        <AcquisitionIndebtednessAmt>42603952</AcquisitionIndebtednessAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>377169562</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>5657543</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>371512019</NetVlNoncharitableAssetsAmt>
        <MinimumInvestmentReturnAmt>18575601</MinimumInvestmentReturnAmt>
      </MinimumInvestmentReturnGrp>
      <DistributableAmountGrp>
        <MinimumInvestmentReturnAmt>18575601</MinimumInvestmentReturnAmt>
        <TaxBasedOnInvestmentIncomeAmt>758021</TaxBasedOnInvestmentIncomeAmt>
        <IncomeTaxAmt>125646</IncomeTaxAmt>
        <TotalTaxAmt>883667</TotalTaxAmt>
        <DistributableBeforeAdjAmt>17691934</DistributableBeforeAdjAmt>
        <RecoveriesQualfiedDistriAmt>0</RecoveriesQualfiedDistriAmt>
        <DistributableBeforeDedAmt>17691934</DistributableBeforeDedAmt>
        <DeductionFromDistributableAmt>0</DeductionFromDistributableAmt>
        <DistributableAsAdjustedAmt>17691934</DistributableAsAdjustedAmt>
      </DistributableAmountGrp>
      <PFQualifyingDistributionsGrp>
        <ExpensesAndContributionsAmt>120000</ExpensesAndContributionsAmt>
        <ProgramRelatedInvstTotalAmt>0</ProgramRelatedInvstTotalAmt>
        <QualifyingDistributionsAmt>120000</QualifyingDistributionsAmt>
      </PFQualifyingDistributionsGrp>
      <UndistributedIncomeGrp>
        <DistributableAsAdjustedAmt>17691934</DistributableAsAdjustedAmt>
        <UndistributedIncomePYAmt>0</UndistributedIncomePYAmt>
        <TotalForPriorYearsAmt>0</TotalForPriorYearsAmt>
        <ExcessDistributionCyovYr5Amt>14524137</ExcessDistributionCyovYr5Amt>
        <ExcessDistributionCyovYr4Amt>13519465</ExcessDistributionCyovYr4Amt>
        <ExcessDistributionCyovYr3Amt>118387</ExcessDistributionCyovYr3Amt>
        <ExcessDistributionCyovYr1Amt>710908</ExcessDistributionCyovYr1Amt>
        <TotalExcessDistributionCyovAmt>28872897</TotalExcessDistributionCyovAmt>
        <QualifyingDistributionsAmt>120000</QualifyingDistributionsAmt>
        <AppliedToYear1Amt>0</AppliedToYear1Amt>
        <AppliedToPriorYearsAmt>0</AppliedToPriorYearsAmt>
        <TreatedAsDistriFromCorpusAmt>0</TreatedAsDistriFromCorpusAmt>
        <AppliedToCurrentYearAmt>120000</AppliedToCurrentYearAmt>
        <RemainingDistriFromCorpusAmt>0</RemainingDistriFromCorpusAmt>
        <ExcessDistriCyovAppCYCorpusAmt>17571934</ExcessDistriCyovAppCYCorpusAmt>
        <ExcessDistributionCyovAppCYAmt>17571934</ExcessDistributionCyovAppCYAmt>
        <TotalCorpusAmt>11300963</TotalCorpusAmt>
        <PriorYearUndistributedIncmAmt>0</PriorYearUndistributedIncmAmt>
        <PriorYearDeficiencyOrTaxAmt>0</PriorYearDeficiencyOrTaxAmt>
        <Taxable1Amt>0</Taxable1Amt>
        <Taxable2Amt>0</Taxable2Amt>
        <UndistributedIncomeCYAmt>0</UndistributedIncomeCYAmt>
        <CorpusDistri170b1EOr4942g3Amt>0</CorpusDistri170b1EOr4942g3Amt>
        <ExcessDistriCyovFromYr5Amt>0</ExcessDistriCyovFromYr5Amt>
        <ExcessDistriCyovToNextYrAmt>11300963</ExcessDistriCyovToNextYrAmt>
        <ExcessFromYear4Amt>10471668</ExcessFromYear4Amt>
        <ExcessFromYear3Amt>118387</ExcessFromYear3Amt>
        <ExcessFromYear1Amt>710908</ExcessFromYear1Amt>
      </UndistributedIncomeGrp>
      <SupplementaryInformationGrp>
        <ContributingManagerNm>Edward P Bass</ContributingManagerNm>
        <OnlyContriToPreselectedInd>X</OnlyContriToPreselectedInd>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>Amazon Biodiversity Center</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>PO Box 96503 PMB 42410</AddressLine1Txt>
            <CityNm>Washington</CityNm>
            <StateAbbreviationCd>DC</StateAbbreviationCd>
            <ZIPCd>20090</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>Tax Exempt</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>Conservation Organization</GrantOrContributionPurposeTxt>
          <Amt>100000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>Botanical Research Institute of Texas</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>1700 University Drive</AddressLine1Txt>
            <CityNm>Fort Worth</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>76107</ZIPCd>
          </RecipientUSAddress>
          <RecipientFoundationStatusTxt>Tax Exempt</RecipientFoundationStatusTxt>
          <GrantOrContributionPurposeTxt>Conservation</GrantOrContributionPurposeTxt>
          <Amt>20000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>120000</TotalGrantOrContriPdDurYrAmt>
        <TotalGrantOrContriApprvFutAmt>0</TotalGrantOrContriApprvFutAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <IntOnSavAndTempCashInvstGrp>
          <BusinessCd>525990</BusinessCd>
          <UnrelatedBusinessTaxblIncmAmt>1284363</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>1355535</ExclusionAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>7</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <OtherInvestmentIncomeGrp>
          <ExclusionCd>15</ExclusionCd>
          <ExclusionAmt>53516357</ExclusionAmt>
        </OtherInvestmentIncomeGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>1284363</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>54871899</ExclusionAmt>
          <RelatedOrExemptFunctionIncmAmt>0</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>56156262</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>0</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>0</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>0</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>0</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>0</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>0</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>0</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>0</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>0</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>0</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <InvestmentsCorpStockSchedule documentId="RetDoc2018900001">
      <InvestmentsCorporateStockGrp>
        <StockNm>Investments in Stock</StockNm>
        <EOYBookValueAmt>107480</EOYBookValueAmt>
        <EOYFMVAmt>160102</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <LegalFeesSchedule documentId="RetDoc2002100001">
      <LegalFeesGrp>
        <CategoryTxt>LEGAL FEES</CategoryTxt>
        <LegalFeesAmt>49925</LegalFeesAmt>
        <NetInvestmentIncomeAmt>49925</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </LegalFeesGrp>
    </LegalFeesSchedule>
    <OtherAssetsSchedule documentId="RetDoc2046600001">
      <OtherAssetsScheduleGrp>
        <Desc>Deferred Financing Costs</Desc>
        <BOYBookValueAmt>10846</BOYBookValueAmt>
        <EOYBookValueAmt>0</EOYBookValueAmt>
        <EOYFMVAmt>0</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Leasehold - A/D</Desc>
        <BOYBookValueAmt>-927180</BOYBookValueAmt>
        <EOYBookValueAmt>-1216832</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Leasehold Cost- Depletable Assets</Desc>
        <BOYBookValueAmt>1593169</BOYBookValueAmt>
        <EOYBookValueAmt>1478378</EOYBookValueAmt>
        <EOYFMVAmt>340000000</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Non-producing Lease Cost</Desc>
        <BOYBookValueAmt>25742</BOYBookValueAmt>
        <EOYBookValueAmt>25767</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Non-producing Royalty</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>114767</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Royalty Accum-Nonproducing</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>-110529</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Excise Tax Receivable</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>48495</EOYBookValueAmt>
        <EOYFMVAmt>48495</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
    </OtherAssetsSchedule>
    <OtherDecreasesSchedule documentId="RetDoc2049800001">
      <OtherDecreasesDetail>
        <Desc>Non-Deductible Expenses</Desc>
        <Amt>3266</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <OtherExpensesSchedule documentId="RetDoc2003200001">
      <OtherExpensesScheduleGrp>
        <Desc>Bank Fees</Desc>
        <RevenueAndExpensesPerBooksAmt>16883</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>16883</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>Amortization Expense</Desc>
        <RevenueAndExpensesPerBooksAmt>10846</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>10846</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>Forgiven Interest Expense</Desc>
        <RevenueAndExpensesPerBooksAmt>1728000</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="RetDoc2001500001">
      <OtherIncomeDetail>
        <Desc>Royalty income</Desc>
        <RevenueAndExpensesPerBooksAmt>53516356</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>53516356</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
      <OtherIncomeDetail>
        <Desc>Other income</Desc>
        <RevenueAndExpensesPerBooksAmt>1</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>1</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherLiabilitiesSchedule documentId="RetDoc2065700001">
      <OtherLiabilitiesDetail>
        <Desc>Excise Tax</Desc>
        <BOYBookValueAmt>44837</BOYBookValueAmt>
        <EOYBookValueAmt>0</EOYBookValueAmt>
      </OtherLiabilitiesDetail>
    </OtherLiabilitiesSchedule>
    <TaxesSchedule documentId="RetDoc2002500001">
      <TaxesDetail>
        <CategoryTxt>EXCISE TAX</CategoryTxt>
        <Amt>883667</Amt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>STATE INCOME TAX</CategoryTxt>
        <Amt>5020</Amt>
        <NetInvestmentIncomeAmt>5020</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>
