The proceeds of all bonds must be delivered to the State Treasurer or its corporate trust designee and retained in a special fund or funds and applied solely to the purposes for which such bonds have been issued. Withdrawals from the fund must be made on the order or requisition of The Citadel and must be in such form as the State Treasurer shall prescribe. The State Treasurer may make temporary investments of funds derived from the proceeds of bonds in the manner prescribed by law.