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Scientific American, Vol. 43, No. 12 (September 1880) (1880)
leaf 4
000 lb. of butter, selling at from 15 to 30 cents a pound. sumptions become much overdone. Defective fiue is the cated and be interchangeable. This invention of the French chemist has added many mil- actual source of a .great many ignitions, and it is not apt to In the upper portion of the… … harrow, one of the sections is allowed to Fig. l.-THE BEYEE EOCK DEILL. the greatest simplicity and efficiency i^ © 1880 SCIENTIFIC AMERICAN, INCPatented · Patents · Caoutchouc · Caisson · Scientific American · Conch · Wrought iron · Wood working · Trade catalogs · Oil tanks · Machine shop · Air chamber · Patent issued · Rock drill · Twenty years
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