Report of the Board of Regents Volume 27

Report of the Board of Regents Volume 27

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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. 1873 edition. Excerpt: ...O. F., and observe the color produced. Various colors will be formed by the combination of the oxides. Saturate the bead and shake it off into the porcelain dish; repeat this once or twice, p. 79. a. Treat these beads on Ch. with a small piece of lead, silver, or gold, in a strong R. P., p. 113. Theso numbers refer to the pages of Plattner's Manual, translated by H. B. Cornwall, 2d edition. D. Van Nostrand, New York, 187a. S. I'e--Mil--Co--Ac, remain in the bead, p. 115. If the bead spreads out on the Ch, it must be collected to a globule by continued blowing. Make i borax bead on platinum wire, and dissolve in it gome of the fragments of the bead, reserving the rest fur accidents. c. Mi--Ca-Ag--Au--Sn--Pb--Bi are reduced and collected by the lead button. Sn, Pb, Bi, if present, will be partly volatilized, p. 115. Remove the lead button from the bead while hot. or by breaking the latter, when cold, on the anvil between paper, carefully preserving all the fragments. d. If Co is present, the bead will bo blue. If a large amount of Fe is present, add a little borax to prove the presence or absence of 'o, p. 222 If In is present, the bead, when treated on platinum wire in the 0. F., will become dark violet or black. e. If only Fe and Mn with no Co are present, the bead will bo almost colorless. Look here for Cr, Tl, Mo, V, W, V, Ta by the wet way. A considerable amount of Ti may bo detected with S. Pll, ami tin in the original oxides, in absence of otbr non.reducible coloring oxides, p. 323. Mo will be shown by the cloudy brown or black appearance of the borax bead in the It. F. ou platinum wire. p. 105. /. Treat the button c on Ch, in the O. F. until all the lead, &c is driven off; Ni, Cu, Ag, All remaining behind; or separate the...show more

Product details

  • Paperback | 186 pages
  • 189 x 246 x 10mm | 340g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236793749
  • 9781236793744