Section 7. All lands received by the state for any specific educational or charitable institution shall be appraised and sold in the same manner and under the same limitations and subject to all the conditions as to price and sale as provided in this constitution for the appraisal and sale of lands for the benefit of common schools. However, a distinct and separate account shall be kept by the proper officers of each of said funds and the limitations as to the time in which school land may be sold shall apply only to lands granted for the support of common schools.