This chapter, referred to in text, was in the original “this Act”, meaning act Sept. 19, 1922, ch. 346, 42 Stat. 849. The Act (except sections 21 to 27) is classified to this chapter. Sections 21 to 27 of the Act amended title II of the Revenue Act of 1921, which was repealed by section 1100 of the Revenue Act of 1924 (43 Stat. 352).