These estimates are made on good homer pigeons, well housed and cared for, not common nondescript birds, leading a half-wild existence, with only old-fashioned shelter behind a row of holes high up in the barn, where the nests are exposed to every storm; besides which, the young of mongrel pigeons only weigh five or six ounces when four weeks old, and are so scrawny and unappetising that they are difficult to market at any price, whilst homers at the same age weigh from twelve to twenty ounces, and are white-skinned and plump. The mature homers will cost about two dollars a pair from any of the recognised lofts, but it is no use buying elsewhere, for unless birds are mated pairs, you may have another season wasted. Pigeons are faithful creatures and remain in pairs for years, and if an accident happens to one of them will frequently refuse to mate a second time the same season. Young birds which are only paired at the time of sale are likely to object to the mates chosen for them, and proceed to exercise personal choice when liberated amid a flock of strange birds. So be wise and buy only from reliable experienced breeders. The most convenient house for squab-raising is built like a chicken-coop, about twelve feet wide, eight feet high in front, sloping to six feet at the back, and any length, according to the number of birds kept. Have plenty of windows in front of the house, and openings six inches square, three feet apart, all along the back of the house about a foot from the roof. Run a nine-inch board the entire length of the house as a platform for the birds to alight on as they go in and out, and it is just as well to have a similar board just under the holes on the inside of the house. Put up three or four perches near the front windows, so that the birds can fly from side to side of the house on wet days for exercise. The number of birds which can be kept in each house can be easiest estimated by the nests. Each pair of brooders must be provided with nest-boxes divided into two compartments twelve inches square. They can be arranged in tiers all along the side, back and front walls, and from floor to ceiling. Put the first tier about eighteen inches above the floor, as the birds don’t seem to like the lower nests. Fasten small perches about a foot long to the partition on each box, for the convenience of the birds as they fly back and forth, and when feeding their young. Before the house is occupied, it should be thoroughly whitewashed, the floor covered with sand or ground plaster, and earthenware dishes known as “nappies,” which cost one dollar a dozen, must be put in, one into each compartment. Suspend a bundle of cut hay in one corner of the house, as some birds like to make their own nests, though others seem to think that a handful of tobacco-stems, which it is well to place in each nappy as a check to vermin, is quite nest enough.