A Key to the Knowledge of Nature, Or, an Exposition of the Mechanical, Chemical, and Physical Laws

A Key to the Knowledge of Nature, Or, an Exposition of the Mechanical, Chemical, and Physical Laws

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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. 1825 edition. Excerpt: ... alloyed with it is rendered white, and the componnd is malleable, flexible, and susceptible of a very high polish. Many articles are made of this alloy which are washed or plated with silver. Arsenic renders lead brittle, and when fused and poured through a sieve, more apt to separate. into grains. In this way is small shot manufactured; for being dropt from the top of a very high tower into water at the bottom, it is, by the attraction of aggregation, globulated on leaving the sieve, and in this form cooled or solidified in its descent. Arsenic is also used in purifying flint glass, as well as for staining glass: the white twisted threads seen in the stalks of some wine glasses, are formed with it. Butter of arsenic is composed of 2 metal and 3 chlorine. Scheele's green is arsenic and potash. King's yellow is made from yellow orpiment. Sulphuret of arsenic is much used in calico printing, for de-oxydizing indigo, and rendering it soluble in alkali. Different shades are given to fine furs by solutions of this metal. The Chinese and other Eastern nations are said to form realgar into medicinal cups, and use lemon juice that has stood sometime in them as a cathartic; and one sixteenth part of a grain of white arsenic may he taken with the greatest safety as a remedy for inveterate agues. Minerals. Arsenic is rather an abundant metal, but chiefly belongs to primary districts; it occurs native along with the ores of several other metals, in many parts of Europe, and also, though sparingly, in North and South America. The white oxide occurs in many places, chiefly stalactitic. Sulphurets are found in Cornwall, Devonshire, at Alva Stirlingshire, and in various parts of the Continent. Realgar or native red orpiment is composed of 69 arsenic and 31...show more

Product details

  • Paperback | 258 pages
  • 189 x 246 x 14mm | 467g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236656962
  • 9781236656964