Mich. Const. art. IX, § 41

The Michigan game and fish protection trust fund is established. The Michigan game and fish protection trust fund shall consist of revenue derived from bonuses, rentals, delayed rentals, royalties, and other revenues collected or reserved by the state under leases or direct sale contracts accruing from state owned lands acquired with money from state or federal game and fish protection funds or revenues accruing from lands purchased with such revenues. The Michigan game and fish protection trust fund may also receive gifts, grants, bequests, or assets from any source and may receive other revenues as authorized by law. The assets of the Michigan game and fish protection trust fund shall be invested as provided by law. The interest and earnings from these investments shall be credited to the Michigan game and fish protection trust fund. The accumulated interest and earnings of the Michigan game and fish protection trust fund and not more than $6,000,000.00 of the principal of the Michigan game and fish protection trust fund may be expended in any year for the purposes of the game and fish protection account of the Michigan conservation and recreation legacy fund established in section 40. The legislature shall provide by law for the implementation of this section.