Fish Ponds. It is necessary, in making an artificial fish-pond, where the earth is of that nature that it will not hold water, to take an equal quantity of gravel, sand, and clay; let these be spread over the proposed pond, and tempered with water, cutting the materials with a spade, and treading it well with the feet, in two courses or layers, each eight inches in thickness; after this is done, cover the whole surface with dry soil, four inches in thickness. The pool, after this process, will be perfectly retentive, and the water may be turned into it as soon as it is completed. On the opposite side of the pool to where the water flows in, should be made a. sort of waste weir with a few bricks level with the surface water in the pond, to take away the overflow, and prevent the water in the pool becoming stagnant.