Elements of chemistry : including the applications of the science in the arts . —a construction first proposed by Mr. Maugham, [first made and used by ProfessorHare.—R. B.] and adapted to the use of coal-gas instead of hydrogen by (Phil. Mag. 3d ser., vol. ii. p. 57.) Each of the gases may be more con-veniently contained in a separate air-tight bag of Macintosh cloth capable of holdingfrom 4 to 6 cubic feet of gas, and provided with press-boards. These require to beloaded with two or three 56ibs., when in use, to send out the gas with sufficient pressure. At this flame the mostFia.
Elements of chemistry : including the applications of the science in the arts . —a construction first proposed by Mr. Maugham, [first made and used by ProfessorHare.—R. B.] and adapted to the use of coal-gas instead of hydrogen by (Phil. Mag. 3d ser., vol. ii. p. 57.) Each of the gases may be more con-veniently contained in a separate air-tight bag of Macintosh cloth capable of holdingfrom 4 to 6 cubic feet of gas, and provided with press-boards. These require to beloaded with two or three 56ibs., when in use, to send out the gas with sufficient pressure. At this flame the mostFia. 107. refractory substances, such as pipe- clay, silica and platinum, are fusedwith facility, and the latter evendissipated in the state of flame itself, owing to the ab-sence of solid matter, is scarcelyluminous, but any of the less fusi-ble earths, upon which it is thrown,— a mass of quick-lime, for instance(a, fig. 105)—is heated most in-tensely, and diffuses a light, which,for whiteness and brilliancy, may be compared to that of the sun. With the requi
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