Volume 1

Animal chemistry : with reference to the physiology and pathology of man / by Franz Simon ; translated and edited by George E. Day.

  • Johann Franz Simon
Date:
1845-1846
Catalogue details

Licence: Public Domain Mark

Credit: Animal chemistry : with reference to the physiology and pathology of man / by Franz Simon ; translated and edited by George E. Day. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

    114/430 (page 90)
    tions of the vital fluid, science would be more benefited by the investigation, than by the performance of a few very perfect analyses, which did not tend to elucidate any particular point. The best methods for the analysis of the various animal sub- stances Avhich are treated of in this volume, will be found in their proper places. We will, however, give a prehminary sketch of the course that should be adopted, if a fluid, of whose nature we are ignorant, be placed in our hands for analysis. Such a fluid may contain, I. The protein-combinations: fibrin, albumen, casein, glo- bulin. ^ II. Pym. III. Extractive matters: water-extract, spirit-extract, alco- hol-extract, and their proximate constituents. IV. Sugars : Diabetic sugar, and sugar of milk. V. Bilin, with the products of its metamorphosis. VI. Urea. VII. The fats : olein, stearin, margarin, butyrin, cholesterin, and serolin. VIII. Colouring matters : the pigments of the blood and bile. IX. The acids of the animal body : a. Fatty acids. (3. Other organic acids. y. Inorganic acids. X. The bases of the animal body. General physical analysis. 1. If the fluid contain flocculi or coagulated matters, they are generally composed of fibrin, which by its spontaneous coagulation frequently includes other substances in a state of mechanical suspension. The whole fluid will sometimes as- sume a gelatinous consistence, as has been observed in certain products of exudation; in other cases it presents an appearance of separation, one portion assuming the form of a cake or clot, whilst the remainder continues fluid, as in the well-known in- stance of the blood. On placing these clots, &c., in distilled I Crystallin, or the modification of casein that occurs in the crj-stalUne lens, is not included in this scheme, since it is not kno>vn to occur in any of the animal fluids. ’ [Pyin being tritoxide of protein, must now he regarded as a true protein-com- poimd. The hinoxidc of i)rotcin must also be included in the same category.]