Portland cement and sharp sand should be used in the proportion of, say, 1 cement to 3 sand. The cost would vary with local circumstances, but might be about 2s. per yard super, for plain face finished from the hand float, with, say, 3d. per yard extra for jointing to imitate ashlar work; mouldings, say 3/4d. extra per inch girth perfoot run; arris edges. 1d. per foot run. A rubble wall is generally supposed to be required one-third thicker than a .similar brick wall. Brickwork, say 9 in. for top floor, and 4 1/2in. extra for each floor below. Rubble walling, say 12 in. for top floor, and 6in. extra for each floor befow.