Moneys from outside sources except those mentioned in section 67-3608 above, as "received from the United States pursuant to appropriations made by it for the maintenance, use and support of any of the educational institutions referred to herein, or for cooperative work with the United States, or for payments in reimbursement of money expended in such cooperative work," are hereby declared to be available for the use for which such money is received for such institution or work, and if received under such terms as to require appropriation, are hereby appropriated to such use, to be used in addition to the direct appropriations made to such institution and the appropriations of other income herein made.