The Decorator's Assistant

The Decorator's Assistant

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. Excerpt: ...of nitre and one of cream of tartar, and collecting the residuum. Black flux is obtained when equal parts of nitre and tartar are deflagrated. It owes its colour to the carbonaceous matter of the tartaric acid which remains unconsumed; the quantity of nitre being too small for that purpose. Notice To The Trade.--Ornamental Designs made, and, if necessary, engraved, on the most reasonable terms, with punctuality and despatch-For particulars, fee, address (if by letter, post paid) to Mr. Wm. Gibba, Ornamental Draughtsman and Engraver, at the DacoEator's Assistant Office, 17 Holy well-street, Strand, London. Improvements In Photoorapht.--M. Niepce, de St. Victor finds that, if a sheet of paper on which there is writing or printed characters, or a drawing, be exposed for a few minutes to the vapour of iodine, and there be applied immediately afterwards a coating of starch moistened, by slightly acidulated water, a faithful tracing of the writing, printing, or 'drawing will be obtained. M. Niepce has also j discovered that a great number of substances, ! such as nitric acid, phosphoric acid, chlorurets of lime and mercury, &c., act in a similar manner, --and that various vapours, particularly!those of ammonia, have the effect of vivifying the images which are obtained by photography. I Oxide Of Zinc For Paint.--A company has been formed at Paris, with a capital of 240,000, (6,000,000f.) for the purpose of making the oxide of zinc, to be used as a substitute for white lead, in painting. The company are erecting spacious premises near the river Seine, between Neuilly and Asnieres, and have engaged to take 300 ton of zinc annually from the Vielle Montagne Company, for 50 years, and all the produce of the Nouvelle Montagne Company, and of the mines of...
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Product details

  • Paperback | 290 pages
  • 189 x 246 x 15mm | 522g
  • United States
  • English
  • black & white illustrations
  • 1236821874
  • 9781236821874