For ordinary foundations, with no great or concentrated loads, the following proportions may be adopted: Bricks, broken to pass through a 2-in. ring, 4 1/2 parts; clean, sharp sand, 2 1/2 parts; ground lias lime, 1 part. If the bricks are broken to pass through a l 1/2-in. ring, then 5 parts to 2 parts sand and 1 part lime may be used. The materials should be accurately measured in gauge boxes, turned over twice or thrice, dry, so as to be intimately mixed before being wetted, water applied by means of a watering can with a rose on the spout, materials again turned over twice, deposited in the required spot in layers about 12 in. thick, carefully rammed, and left to set. It is important not to disturb the mass after it has begun to set.