In subsection (a), the words “by purchase or otherwise” and 40:290(last par. words before 1st proviso) are omitted as unnecessary.

Subsection (b) is substituted for 40:290(last par. 1st proviso) to eliminate unnecessary words.

In subsection (c), the words “subchapter I of chapter 81 of title 5” are substituted for “the United States Employees’ Compensation Act as amended from time to time (Act of September 7, 1916, 39 Stat. 742, U.S.C., title 5 and supplement, sec. 751 et seq.)” because of section 7(b) of the Act of September 6, 1966 (Public Law 89–554, 80 Stat. 631), the first section of which enacted Title 5, United States Code.