Rural Economy; In Its Relations with Chemistry, Physics, and Meteorology Or, Chemistry Applied to Agriculture

Rural Economy; In Its Relations with Chemistry, Physics, and Meteorology Or, Chemistry Applied to Agriculture

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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. 1865 edition. Excerpt: ...matters would be readily explicable. I must say, however, that I have sought in vain for nitrate of ammonia in the product of the putrid fermentation of caseum. And after all, we should still be at a loss to account for the formation of nitre in many places, where it appears to be produced in the absence of organic matter, as in the saltpetre soils of India, South America, and Spain. Dr. John Davy, who visited the nitre districts of Ceylon, and Proust, who long inhabited the Peninsula, have given it as their opinion that the nitre appears in soils which contain no vestiges of organic matter. The assertion of Proust, however, is open to suspicion, inasmuch as in his memoir he affirms that the lands close to those that produce the nitre are extremely fertile, so that they yield abundant crops without ever receiving manure. But at the present day, it is a law that every fertile soil must contain or receive dead organic matter. In Ceylon, according to Davy, the caverns, the walls of which become covered with an efflorescence of saltpetre with such rapidity, have a fertile and thickly wooded soil lying over them, the percolations from which may readily penetrate their interior. The observations which I had an opportv lity of making upon the nitre soils near Latacunga, were not perhaps of sufficient precision; but I think I can affirm that the soil was not without humus: patches were perceived here and there that were covered with turf. It must still be admitted, however, that in the localities which have been particularly indicated there must exist some peculiar and permanent cause of nitrification; inasmuch as in other and fertile soils, saltpetre only appears as it were accidentally, and never in extraordinary quantity. Whatever the value of the...show more

Product details

  • Paperback | 232 pages
  • 189 x 246 x 12mm | 422g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123660699X
  • 9781236606990