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Concrete Floors and Walks

Compost for barn and kitchen floors the ground on which the floor is intended to be made is leveled, let it be covered to the thickness of 3 or 4 inches with stones, broken small, and well rammed down; upon which let there be run, about 1½ inches above the stones, 1 part by measure calcined ferruginous marl, and 2 parts coarse sand and fine gravel, mixed to a thin consistence with water. Before this coating has become thoroughly set, lay upon it a coat of calcined marl, mixed with an equal part of fine sand, 1 to 1½ inches thick, leveled to an even surface. The addition of blood will render this compost harder. The calcined marl mentioned above is the Portland cement of commerce. (See No. 2195.)