Chemical Essays, Principally Relating to the Arts and Manufactures of the British Dominions

Chemical Essays, Principally Relating to the Arts and Manufactures of the British Dominions

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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: ...examined of this salt appear to be very clear, and it has a property which I never observed in any other salt--that it does not decrepitate in the fire. The bay-salt imported into this country, and hitherto so much approved for many purposes, is all made by the evaporation of sea water, and consequently must be extremely impure. The price of common salt in Cheshire, without duty, is i. per ton, the price of Messrs. Londons' refined salt is 21. per ton. General Statement of some of the Results of Dr. Henry's Experiments on various Kinds of'Common Salt... See Dr. Henry's " Memoir on the Analysis of several varieties of British and Foreign Salt," in the Philosophical Transactions for 1810, page 89. 164. Soda for glass.--Page 178, live Q. Since this paragraph was written, I have investigated the nature of the comparative effects of soda and potash in making glass; and I am now convinced that a harder glass may be made with soda than it is possible to produce from potash only.--See the Essay on Glass, vol. iii. page 504 &c. 165. Oil soap.--Page 178, line 12. It is well known that olive oil produces better soap than any other substance. I am therefore anxious to suggest whether it might not be a desirable thing for Government to encourage the growth of olive-trees in some of the British colonies, or in some fayourable district in the British settlements in the East Indies. The oil would in time form an important branch of commerce, especially if enough were produced to supply all our soap-manufactories: and this would render the country more independent of Russia 5 which is a very important object. A competent opinion of the value of this oil for fhe manufacture of soap, when compared with others, both vegetable and animal, may be...show more

Product details

  • Paperback | 62 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236518624
  • 9781236518620