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The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)

Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 368

An illustration from The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies, 1856, leaf 368
by a moderate pressure. For obtaining this pressure a wideboard may be used, with one end resting on the floor, and sustaining a weightof forty or fifty pounds. This bag may be placed in a box beneath the stand,and a pressure better applied, if desired. Guard against getting this in any waypierced.… … HYDROGEN, HOW PREPARED. 359 The Hijdrogen Generator, Fig. 276, is a convenient ap-paratus for the rapid manufacture of this gas. This consistsof a cylindrical copper cistern, holding from two to seven gal-lons, provided with a wood cover, held firmly to the cistern by thebinding screws, 5 s. and…

Physics

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