9. Payment of Tax Shown to be Due on Return 157 17. Income from Gains Upon Sale or Exchange of Property-The Closed Transaction 382 18. Income from Gains Upon Sale or Exchange of Property-Determining Gain or Loss-Basis and Computation.. 431 22. Income from Royalties, Copyrights and Patents 23. Income from Interest-General 24. Income from Interest on Obligations of the United States . . 607 25. Income from Rents . 617 |