Money declared by an instrument in writing to be intended for the perpetual care, maintenance, improvement or embellishment of any cemetery in this state, or of any lot or plot therein, to an amount not less than one hundred dollars, may be deposited with the State Treasurer who shall, in the name of the state, receive and receipt therefor. Each depositor shall, at the time of making such deposit, file with the State Treasurer and with the Secretary of the State a copy of such instrument. The State Treasurer shall invest the money deposited with the State Treasurer under the provisions of this section, in the name of the state, in bonds or other obligations of the state or other securities in which the State Treasurer is authorized to invest money on behalf of the state; and, on the first days of February and August annually, the State Treasurer shall pay over the accrued interest thereof to the treasurer of the town in which the cemetery is located, and the same shall be expended in the same manner as the income of funds donated to towns under the provisions of section 19a-304. At the time of paying such interest the State Treasurer shall inform the person to whom it is paid of the purpose to which it is to be applied, as stated in the copy of such instrument, and such person shall thereupon apply it to such purpose.