Mississippi Code Title 31. Public Business, Bonds and Obligations § 31-17-31

All sums paid into the state bond retirement revolving fund shall be kept by the State Treasurer as are other public funds. All federal securities purchased under the provisions of Section 31-17-29 shall be deposited with the State Treasurer and shall be kept by him as are other bonds owned by the state, but he may deposit same under proper trust receipts with one or more state depositories or with any federal reserve bank of the United States.