Experimental researches on the food of animals, and the fattening of cattle : with remarks on the food of man, based upon experiments undertaken by order of the British Government / by Robert Dundas Thomson.

  • Thomson, Robert Dundas, 1810-1864.
Date:
1846
Catalogue details

Licence: Public Domain Mark

Credit: Experimental researches on the food of animals, and the fattening of cattle : with remarks on the food of man, based upon experiments undertaken by order of the British Government / by Robert Dundas Thomson. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    The nature of the inorganic salts, both of the stem of the grass, when dried, as hay, and of the seeds, is as represented in the following tables. 100 parts of the stem and seeds were composed as follows :— Water Organic Matter - Ash - Stem. Stem. Seed. 1550 79 52 4-98 1930 75-72 4-98 11-376 82548 6070 Table of Saline Matter in Stem and Seeds of Lolium perenne, (Rye-grass.) Silica - Phosphoric Acid - Sulphuric Acid Chlorine Carbonic Acid Magnesia Lime - Peroxide of Iron - Potash Soda --- Stem. Seed. 64-57 4328 1251 16-89 - 312 trace - 361 401 531 650 1855 0'36 2-10 8-03 5-80 217 1-38 There is no doubt, from numerous other analyses which I have made, that these numbers undergo very considerable modifications on different soils. A comparison of the two columns of this table adds another argument to that already brought forward against the practice of allowing rye-grass to come to seed before cutting it for hay, since the seed tends to remove a larger portion of phosphoric acid from the soil than the stem; the quantity of acid found in the 7*