Sec. 204. Subsection (d) of section 8 of such Act is amended— (1) by striking out “during the period beginning July 1, 1953, and ending June 30, 1958,”; and (2) by inserting before the period at the end thereof the following: “, or the availability of appropriations under the Act of April 16, 1934, commonly referred to as the Johnson-O’Malley Act (25 U. S. C., sec. 452)”.