Reports to the President of the University from the Colleges of Agriculture and Mechanic Arts

Reports to the President of the University from the Colleges of Agriculture and Mechanic Arts

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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. 1877 edition. Excerpt: ...and especially their resistance to drouth. It might not pay to resort to the use of the marl where it has to be transported to a distance; but where it can be plowed up, or spread' over the soil from pits a few feet deep, dug in the field at intervals, the operation can hardly fail to be profitable in the end, but more especially where the soil begins to show signs of exhaustion. From the mode of occurrence of this marl, I conjectured that, by accident, if not otherwise, experience must already have shown its usefulness. Upon inquiry from Mr. Learned, I find that such is the case; although, doubtless, the whitish clays have not at times been well distinguished from the marl proper. Mr. Learned says on this subject: "I am fully satisfied from my experiments that the marl will increase the production and render the adobe easier of cultivation. Where the adobe had all been washed away in my vineyard, I planted vines in the marly hardpan, and they have done as well as any. But where the marl is more than a foot deep, it is so porous that vegetation will dry up three weeks sooner than elsewhere." The latter result is, of course, what might have been expected, for marl by itself is rarely a good soil. But it seems that experiments on the effects of marling were inaugurated already by the "oldest inhabitants," probably of the squirrel tribe. Specimens sent by Mr. Learned, of the soil of certain mound-like elevations occurring in the adobe, and noted for their fertility, prove on examination to consist of an intermixture of adobe soil with gray marl. This soil is so loose as to be considered a loam, although it lacks, to a remarkable degree, the sand ingredient usually present. Its looseness, warmth, and thriftiness, is...show more

Product details

  • Paperback
  • 189 x 246 x 2mm | 82g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236958543
  • 9781236958549