"Capital Sum" and "Invested Capital," Definition of Capital Re coverable in Case of Owner and Lessee-Apportionment Between Lessor and Lessee-Determination of Cost-Fair Market Value-Determina- tion of Quantity of Oil in Ground-Computation of Depletion of Oil Wells and Gas Wells-Gas Well Pressure Records-Computation Where Quantity of Oil or Gas Uncertain-Computation for Combined Hold- ings of Oil and Gas Wells-Statement to Be Attached to Return-Dis- covery of Oil and Gas Wells-Charges to Capital and Expense-De- Determination of Fair Market Value-Determination of Quantity-Com- putation of Allowance-Revaluation of Stumpage-Charges, to Capital and Expense-Depreciation of Improvements-Statement to Be At- NORMAL TAX CREDITS-PERSONAL EXEMPTION. Credit of Dividends and Interest-Personal and Specific Exemptions- Definition-Citizens of the United States-Resident Aliens-Non-Resident Aliens Citizens of Possessions, Residing in the United States - Domestic and Foreign Corporations-Members of Partnerships-Bene- ficiaries of Estates or Trusts-Conditions of Allowance of Credit- Collectors-Returns Made by Collectors-Erroneous Returns-Under- ASSESSMENT AND PAYMENT OF THE TAX. Suits to Restrain Assessment or Collection-Time of Payment-Assess- PENALTIES AND COMPROMISES. 496 516 Suits to Enjoin Collection of Penalties-Failure to File Return-Inten- ABATEMENT, REFUND AND RECOVERY OF TAXES Taxes Paid on Second Assessment-Who May Claim Recovery-Abatement 562 Examination of Books-Requiring Attendance of Witnesses-Production of Books-Enforcement of Provisions as to Examination, Attendance and Production · Constitutionality of Examination and Production Provisions of Statute-Corporations - National Banks - Government Definition-Fixed or Determinable Annual or Periodical Income-Bond Interest-Against Whom Tax Is Withheld-Who Are Required to With- In General-Definition-Rate of Tax to Be Withheld-Object of With- holding Provisions in Case of Tax-Free Covenant Bonds-Procedure of Corporation Issuing Tax-Free Covenant Bonds-Examples of Covenants Construction of Constitutional Provisions-Power of Congress to Levy Income Taxes Taxing Gains and Profits From Sale of Property— Interest on State and Municipal Obligations-Want of Due Process of Law-Uniformity-Exempting Certain Corporations From Tax-Retro- WAR-PROFITS AND EXCESS-PROFITS TAX. To Whom the Law Applies-Corporations Partly in Personal Service Busi- Business of Partnership or Individual-Affiliated Corporations-Bal- 643 THE CAPITAL STOCK TAX. Definitions-Domestic and Foreign Corporations-Basis and Rate of Tax- 714 General Scope of Law-General Exemptions Stamps-Bonds of Indebted- ness- -Bonds of Indemnity and Surety-Capital Stock, Issue-Capital Stock, Sales and Transfers-Certificates of Profits-Checks-Convey- ances-Drafts-Entry for Withdrawal of Goods or Merchandise From Customs Bonded Warehouse-Entry of Goods, Wares or Merchandise at Customhouse-Insurance Policies Parcel Post Packages-Passage Tickets-Playing Cards-Powers of Attorney-Sales of Produce on Exchange Promissory Notes-Proxies-Records Required in Case of Sales and Transfers of Stock and Produce on Exchange-Constitution- ality of Stamp Taxes-Injunctive Relief-Protest and Duress......... Effective Date-Persons to Whom Act Applies-Mill, Cannery, Workshop, Factory, or Manufacturing Establishment-Mine or Quarry-Time- Duration of Employment-Certificate of Age-Proof of Age-State Certificate-Mistake as to Age-Inspection-Basis and Rate of Tax- Interest Deduction by Corporations Under Revenue Act of 1916..... Extracts from Oil and Gas Manual on Estimation of Recoverable Under- |