The Secretary of Agriculture, to secure and protect for all time the big trees scientifically known as Sequoia washingtoniana, is empowered, in his discretion, to obtain for the United States the complete title to any or all of the following-described lands in the State of California: In township 4 north, range 15 east, Mount Diablo meridian, the northeast quarter of section
1; in township 4 north, range 16 east, Mount Diablo meridian, the north half of section
6; in township 5 north, range 15 east, Mount Diablo meridian, the southwest quarter of section
14, south half of section
15, north half of section
22, northwest quarter of section
23, and southeast quarter of section
36, and in township 5 north, range 16 east, Mount Diablo meridian, the west half of section
28, the east half and southwest quarter of section
29, the southeast quarter of section
30, all of sections
31,
32, and the northwest quarter of section
33. And such area or areas, as fast as complete title is acquired, shall be permanently held by the United States and shall be known as the Calaveras Bigtree National Forest and shall be administered, and protected, by the Secretary of Agriculture from the funds appropriated for the administration of National Forest land to prolong the existence, growth, and promote the reproduction of said big trees. The owners of land acquired hereunder shall convey to the United States full title to any of the above-described areas approved for said national forest by the Secretary of Agriculture, the completeness of such title to be determined by the Secretary of the Interior in each case, and shall be reimbursed therefor only in one or both of the following ways: