That all inmates of this home may be as well occupied as circumstances will permit, the trustees are directed to buy sufficient lands, from time to time, to be farmed by such inmates, and if there is more than enough farm-produce raised for use at the home, then the surplus is to be sold at market prices, and this profit is to be used to the best advantage to get such extras or necessaries, either in the way of apparel, edibles or home comforts, as is deemed best by the trustees.