This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1852 Excerpt: ... to some discovery concerning vitriol or copperas of liars,' by some called salt of steel, made by the spirits of vitriol or sulphur. For the corroded powder of steel will, after ablution, be actively attracted by the loadstone, and also remaineth in little diminished quantity; and therefore, whether those shooting salts partake but little of steel, and be not rather the vitriolous spirits fixed into salt by the effluvium or odour of steel, is not without good question.7 CHAPTER III. Concerning the Loadstone; a rejection of sundry common opinions and relations thereof; natural, medical, historical, magical. And first, not only a simple heterodox, but a very hard paradox, it will seem, and of great absurdity unto obstinate ears, if we say, attraction is unjustly appropriated unto the loadstone, and that perhaps we speak not properly, when we say vulgarly and appropriately, the loadstone draweth iron; and yet herein we should not want experiment and great authority. The words of Eenatus des Cartes, in his Principles of Philosophy, are very plain. Prceterea rnagnes trahit ferrum, sive potius rnagnes etferrum ad invicem acce 6 some discovery concerning vitriol or copperas of Mars. The aait here alluded to, commonly termed green vitriol, is the hydrated protosulphate of iron,--a combination of the protoxide of iron with the sulphuric acid and with water, bearing nearly the same relation to metallic iron which blue vitriol bears to metallic copper. The manner in which Browne adverts to these substances, evinces that he entertained approximately correct ideas respecting the nature of the several salts termed copperas. But when he supposes that "those shooting salts" (meaning thereby the hydrated protosulphate of iron), "partake but little " of the metal from which ...
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