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To make mortar Take 3 parts of fine and 4 parts of coarse sand 1 part of quick lime recently slacked and as little water as possible. the addition of burnt bones renders it more tenacious(tenuous?) and less liable to work it might not to exceed 1/4 of the lime. Weight of grain in N.J. Wheat 60, rye & corn 56, Buckwheat 50, Barley 48, flax seed 54, cloverseed 60