Mich. Comp. Laws § 21.191
Proceeds from sale of educational lands; use.
That all money received into the state treasury from the sale of lands, and placed to the credit of the university fund, the agricultural college fund, the normal school fund, the primary school fund, or the 5 per cent primary school fund, on and after the first day of March, 1875, shall be used in defraying the expens…