Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 263
edby means of hydrofluoric acid, for fluorine has a greataffinity for silicic, acid, which is contained in glass. Theglass is covered with wax, and the design is traced witha needle. The acid attacks the glass and leaves the wax,so the design is eaten in. (Symbol F. Atomic weight 19.) Chlorine,… … Facets of a brilliant. fused elements in nature, and claims more than a passingnotice at our hands, though even that must be brief. Wemay put down carbon next to oxygen as the most im-portant element in the world. The forms assumed bycarbon are very variable, and pervade nature in all itsphases. We…
Scientific recreations
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![An illustration from Cosmographia in qvatvor libros distribvta summo ordine, miraqve facilitate, ac breuitate ad magnam Ptolemæi mathematicam constructionem, ad vniuersamque astrologiam institutens. Francisco Barocio ... avtore. Cum præfatione eiusdem autoris, in qua perfecta quidem astrologiæ diuisio, & enarratio autorum illustrium, & voluminum ab eis conscriptorum in singulis astrologiæ partibus habetur: Joannis de Sacrobosco verò 84 errores, et alij permulti suorum expositorum, & sectatorum ostenduntur. rationibusq[uam] redarguuntur. Præcesserunt etiam quædam communia mathematica, necnon arithmetica, & geometrica principia, nonnullæq[uam] propositiones, de quibus in toto opere sæpe fit mentio: ac demum locupletissimus index eorum, quæ ipsa Cosmographia continentur .. (1585)](https://img.insideoutlibrary.com/img/200/ia-cosmographiainqv00baro-127-49.webp)
