The Elements of Physiological and Pathological Chemistry; A Handbook for Medical Students and Practitioners, Containing a General Account of Nutrition, Foods and Digestion, and the Chemistry of the Tissues, Organs, Secretions and

The Elements of Physiological and Pathological Chemistry; A Handbook for Medical Students and Practitioners, Containing a General Account of Nutrition, Foods and Digestion, and the Chemistry of the Tissues, Organs, Secretions and

By (author) 

List price: US$22.40

Currently unavailable

Add to wishlist

AbeBooks may have this title (opens in new window).

Try AbeBooks

Description

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. 1884 edition. Excerpt: ...the kreatin, inosit, xanthin, sarkin, and lactic acid are derived chiefly from the gray substance. 6. Sa.1ts.--Fresh brain yields an average of 0'57 per cent. of ash (GEOGHEGAN), which consists chiefly of potassic chloride and sodic phosphate with a little potassic and magnesic phosphate, sodic carbonate, and potassic sulphate. The solid residue of the gray substance contains about 0'63 per cent. more phosphoric acid than that of the white. The phosphoric acid appears to be increased by brain work, but this is doubtful, for it is possible that while the total phosphoric acid remains constant the alkaline phosphates may be increased and the earthy phosphates diminished. The urea and carbonic acid are also said to be increased by brain work or prolonged nervous excitation, the temperature also being raised (DAVY). As abnormal constz'tuents we may find urea and leucin in excess, as also excess of fats. III. The Ash.--Ana.lysis after the separation of the Lecithin, etc. (GEOGHEGAN). Percentage in fresh brain. BREED only obtained 0'02? per cent-. of ash, of which potassic phosphate constituted 55124 per cent., and sodic phosphate 22'93 per cent-. SCHLOSSBERGER found 1 per cent. in the gray substance of a calf"s brain and 1'16 per cent. in the gray matter of a human brain (set. 75). Dz_'fl'erence between the Gray and W7n'te Substance Chemica-lly.--Of the solids (1) the albu-mans a-ml neurolceratin form more than half the gray substance and only about one-fourth of the white. (2) On the other hand, cholesterin and fat constitute more than half the dry mass of the white and about one-fourth of the gray; so that the chief constituents, so far as quantity is concerned, are water and albumens in the gray, and water, cholesterin, and fat in the...show more

Product details

  • Paperback | 238 pages
  • 189 x 246 x 13mm | 431g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236978269
  • 9781236978264