. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. 448 PHYSIOLOGY AND MORPHOLOGY OF ANIMALS. erse that organ, the animal speedily falls into deep coma and dies in a halt hour. Frogs bear well the liga- tion of the liver, because katabolic processes are very slow in these cold-blooded animals; but if a few drops of the blood of a dog dead of ligated liver be injected into a frog's veins it speedily dies if its liver be ligated; but if its liver be not ligated it is not harmed at all. Evi- dently, therefore, there is formed by katab
. Outlines of the comparative physiology and morphology of animals. Anatomy, Comparative; Physiology, Comparative. 448 PHYSIOLOGY AND MORPHOLOGY OF ANIMALS. erse that organ, the animal speedily falls into deep coma and dies in a halt hour. Frogs bear well the liga- tion of the liver, because katabolic processes are very slow in these cold-blooded animals; but if a few drops of the blood of a dog dead of ligated liver be injected into a frog's veins it speedily dies if its liver be ligated; but if its liver be not ligated it is not harmed at all. Evi- dently, therefore, there is formed by katabolism a viru- lently poisonous substance, which is decomposed and ren- dered innocuous in the liver. This is certain. Now, my view is that the manner in which this substance is de- composed is by splitting into glycogen and urea. The exact process of change of waste and of albu- minoids generally in katabolism is very obscure and im- perfectly known. Probably it is complex and contains many steps. But the poisonous results of albuminoid Animal Life. Fig. 307.—Diagram the cenera'.ion of animal heat and animal force, and the products formed in the process. descensive change are called in a general way leuco- maines. Now, the propositi-n is that leucomaines are decomposed in the liver in the manner already explained. After this explanation we now repeat the diagram on page 422, with some additions, and are prepared to ex- plain it more fully (Fig. 307). This figure, in addition to the general process by which vital force is generated, gives also some details: (1) that amyloids, and probably fats also, are changed. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original LeConte, Joseph, 1823-1901. New York, D. Appleton and Company
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