The American Repertory of Arts, Sciences, and Manufactures Volume 1

The American Repertory of Arts, Sciences, and Manufactures Volume 1

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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. 1840 edition. Excerpt: ...the trifling sum saved, and the tax of one thousand dollars yearly, besides the certain losses, crosses, and contingencies attending a future confiagration, against which no insurance ever did 01' can provide. In a late " Report on a re-examination of Massachusetts," by Professor Hitchcock, we have noticed an account of a new mode of analysing soils, which is so simple and important, that we are induced to transfer it to our pages. It is the invention of Dr. SAMUEL L. DANA, of Lowell, Mass. RULES OF ANALYSIS. 1. "Sift the soil through a fine sieve. Take the fine part, bake it just up to browning paper. 2. " Boil one hundred grains of the baked soil with fifty grains of pearl ashes, saleratus, or carbonate of soda, in four ounces of water, for half an hour; let it settle; decant the clear; wash the grounds with four ounces of boiling water; throw all on a weighed filter, previously dried at the same temperature as was the soil; wash till colorless Water returns; mix all these liquors. It is a brown colored solution of all the soluble geim. All sulphates have been converted into carbonates, and, .with any phosphates, are on the filter. Dry, therefore, that, with its contents, at the same heat as before. Weigh------the loss is soluble game. 252 ANALYSXS or sons. 3. " If you wish to examine the geine, precipitate the alkaline solution with excess of lime water. The geate of lime will rapidly subside, andif lime water enough has been added, the nitrous liquor will be colorless. Collect the geate of lime on a filter; wash with a little acetic or very dilute muriatic acid, and you have geine quite pure. Dry and weigh. 4. " Replace on a funnel the filter and its earthy contents, wash with two drams muriatic acid...show more

Product details

  • Paperback | 200 pages
  • 189 x 246 x 11mm | 367g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236820908
  • 9781236820907