A good and convenient arrangement, though not by any means the best, is to provide a covered yard beneath the stable, into which the excrements may be thrown for temporary storage. In such an arrangement, the danger is that the basement story will be built largely under ground and be too low. If so, it cannot be suitably lighted and ventilated. If properly constructed, and the floor above is made tight and the manure is cared for as it should be, such arrangement will be fairly satisfactory. If a lower story (not a cellar) is used for the temporary storage of the manures and for temporary shelter for farm implements in the summer, care must be taken to prevent the manure from heating. Horse excrements, if unmixed with those of the cows, should be thoroughly wet from time to time and, if convenient, solidified by the tramping of animals. Some salt may be used on the manure, a quart for each load. This will retard heating and discourage the flies from breeding in the manure. Dry earth, or better gypsum, should be sprinkled daily on the floors of the stables where they are damp. One quart of fine dry earth, or half that much of gypsum will be sufficient for each stall. By such treatment, sanitation will be promoted and the manures be conserved. Gypsum is better than dry earth in the stables, since it acts not only as an absorbent and disinfectant, but, when the manure is applied to the land, the gypsum helps to make the potash in the soil available. But no stable treatment will conserve manures when thrown out under the eaves. Fig. 90 shows the worst possible disposition that can be made of a valuable product from the stable. The manure from the horse stable, in any case, should be carefully husbanded, since the amount, including bedding, usually reaches six to eight tons per horse per year. The value per day of the excrements ranges from three to five cents and from ten to fifteen dollars per year, per horse, provided the horses are in the stables the greater part of the time. (See "Fertility of the Land.") If means justify, a lean-to or a separate small building may be constructed for temporary storage of manures; in which case they may have to be transported daily to the storage building. Swine or cattle may, in some cases, be allowed to roam over the manure for a portion of each day in the winter with benefit to the manure and to the animals.
Fig. 90. There are better ways than this.