First-Fourth Report on the Agriculture of Massachusetts

First-Fourth Report on the Agriculture of Massachusetts

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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. 1838 edition. Excerpt: such in the soil. Of the soluble alkaline salts, probably none exist in the soil. They are products of vegetation educed from the composition of silicates and salts. The composition of the insoluble part of ashes gives us nearly the constituents of leeched ashes. If the soapboilers' process was as perfect as that which the chemist employs--still his leeched ashes would show more lime, than the above tables, because he always employs a portion of lime to make his lye caustic. This is a variable portion; whatever it is, it adds so much to the value of the leeched ashes. Besides the soap-maker always leaves a portion of alkali, which is combined with the silex. Exposure to air decomposes this, and then the alkali can be extracted by water. This great source of the active power of leeched ashes. The course of this wonderful power, not only in fresh and in leeched ashes, but in some degree in all salts, is to be found, in the action of the bases on geine and on silicates. There is one great, simple principle running through all the classes of soils. It is this, that in all salts and silicates the action of the bass is ever the same in vegetation. The base ofthe silicates and salts acts always in one uniform mode. Peculiarities of action depend on the acid constituent of the salt. Lime, for instance, acts ever the same, whether it is used as carbonate, sulphate, or phosphate, marl, plaster, or bone-dust. The salt is decomposed by the living plant. The various acids combine with the'alkalies, as they are eliminated, from the decomposition of the silicates, and the lime, liberated, acts ever as lime. It acts in its caustic state, as a converter of insoluble into soluble geine. If this does not exist in the soil, all the lime in...
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Product details

  • Paperback | 180 pages
  • 189 x 246 x 10mm | 331g
  • United States
  • English
  • black & white illustrations
  • 1236870786
  • 9781236870780