. Canaries, hybrids, and British birds in cage and aviary. THE BREEDING-ROOM 39 may be averted, and other discomforts which wait on a late spring considerably ameliorated. This last is the true object of artificial heating ; not to force birds out of season, but to make the most of them in season—to. combat adverse cir- cumstances by means that most nearly approximate to those employed by Nature. The best means of heating a bird-room is undoubtedly by hot-water pipes that pass along the side of the room, for which the water is kept hot either by a stove or gas jet arranged in a casing outside
. Canaries, hybrids, and British birds in cage and aviary. THE BREEDING-ROOM 39 may be averted, and other discomforts which wait on a late spring considerably ameliorated. This last is the true object of artificial heating ; not to force birds out of season, but to make the most of them in season—to. combat adverse cir- cumstances by means that most nearly approximate to those employed by Nature. The best means of heating a bird-room is undoubtedly by hot-water pipes that pass along the side of the room, for which the water is kept hot either by a stove or gas jet arranged in a casing outside the room. But as such a construction is some- Hot=Water Pipes. attached. This apparatus can be heated by oil, and we understand that an automatic oil tank will last from fifteen to twenty hours without re-filling. For ourselves, however, we certainly prefer to use gas. The tubes d d are of welded iron ; c is a copper tank, from which the apparatus is fed ; the water passes from it by means of the fine tube / into the lower large tube d; a condensing pipe g completes a most efficient apparatus. Mr. Dewhurst says of it : "It constitutes a great advan- tage in the utilisation of hot water for heating purposes, and is constructed upon the principle embodied in the well-known. MR. H. DEWHURST'S "ECONOMIC" HEATING APPARATUS. what expensive, and as all houses are not convenient for equipment of this kind, the working-man is greatly handicapped in availing himself of it. There are, how- ever, some handy hot-water coils which can be arranged in a room for heating with a gas jet which is enclosed in a small copper casing, and has a flue to carry off the deleterious products of combustion. Mr. H. Dewhurst, of West Kensington, London, brought out such an apparatus some years ago known as the " Economic Heating Apparatus," of which he is the sole maker. On this page is an illustration of the appara- tus, and it will be seen that it takes up but little space. It ca
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