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Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices"; (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing company · leaf 180

An illustration from Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices";, 1917, leaf 180
Suction 423. ELECTRIC INCUBATOR. German. A basket filled withhay or fine straw upon which the eggs are laid. The cover consists of … a layer of soft down attached to a circular box containing coils of wire.The latter are heated by an electric current whose temperature is regu-lated by a thermometer placed on the cover. When the heat becomes toogreat, the rise of the mercury cuts the coils out of circuit and allows themto cool. A…

Mechanical movements

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