The Gallery Of Nature And Art; Or, A Tour Through Creation And Science Volume 5

Paperback | July 9, 2012

byEdward Polehampton

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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. 1815 edition. Excerpt: ...by being well burnished. Lewis Com. Phil. p. 53. + Id. 60, CHAP. V. GILDING IN OR MOULU; USE OF OUICKSILVBR IN EX-TRACTINO GOLD AND SILvER FROM EARTHS; EXPH-KIMENTS OF BOERHAAvE ON QUICKSILvER i S1LVBR-I NO LOOKING-GLASSES, AND THE TIME WHEN THAT ART WAS DISCOVERED. J. Here is another method of applying gold on copper or silver, which is much practised; it is called gilding in Or Moulu. Quick. silver dissolves gold with great facility: if yon spread a gold leaf (not what is called Dutch leaf, which is made of brass) on the palm of your hand, and pour a little quicksilver upon it, yon will see the quicksilver absorhing the gold, just as water absorbs into its substance a piece of salt or sugar. Persons who have taken mercurial preparations internally, seldom fail to observe the readiness with which the mercury transudes through their pores, attaching itself to the gold of their watches, rings, sleeve-buttons, or ear.rings, and rendering them of a white colour. A piece of gold, of the thickness even of a guinea, being rubbed with quicksilver, is soon penetrated by it, and thereby made so fragile, that it may be broken between the fingers with ease: and if more quicksilver be added, the mixture will become a kind of paste, of different degrees of consistence according to the quantity of quick. silver which is used. A piece of this paste is spread, by ways well known to the artists, upon the surface of the copper which is to be gilded in or moulu, and the metal is then exposed to a proper degree of heat: quicksilver may be evaporated in a far less degree of heat, than what is required to melt either gold or copper; when therefore the mixture of gold and quicksilver U exposed to the action of fire, the quicksilver is driven off in vapour; and the...

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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. 1815 edition. Excerpt: ...by being well burnished. Lewis Com. Phil. p. 53. + Id. 60, CHAP. V. GILDING IN OR MOULU; USE OF OUICKSILVBR IN EX-TRACT...

Format:PaperbackDimensions:244 pages, 9.69 × 7.44 × 0.51 inPublished:July 9, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217386148

ISBN - 13:9780217386142

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