File:Kidney diseases, urinary deposits, and calculous disorders - their nature and treatment (1870) (14592617739).jpg

Identifier: kidneydiseasesur00beal (find matches)
Title: Kidney diseases, urinary deposits, and calculous disorders : their nature and treatment
Year: 1870 (1870s)
Authors: Beale, Lionel S. (Lionel Smith), 1828-1906
Subjects: Kidneys Urinary organs Urine Kidney Diseases Urinalysis Urinary Calculi
Publisher: Philadelphia : Lindsay and Blakiston
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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which dissolves the creatinine very readily, but leaves thecreatine, which maybe recrystallised by solution in hot water. Crystalsof creatine are also represented in pi. VI, fig. 4. Creatine is obtained from all kinds of lean meat, but exists in largerproportion in that of mammalia than in birds, reptiles, and fishes.Gregory obtained 0-14 from 100 parts of bullocks heart, o-o8 in 100parts of pigeons flesh, and o-o6 in the same quantity of the flesh of theskate. Although the flesh of fishes contains less creatine than that ofthe higher animals, it is more favourable for extraction. I obtainedmore than seventeen grains of creatine from two pounds of the flesh ofthe crocodile. The presence of creatine has been detected in the bloodby Verdeil and Marcet. Traces of it have been discovered in theamniotic fluid. Its existence in the juice of muscular tissue, and its presence in theurine, would lead to the conclusion that creatine was one of the nitro- ILLUSTRATIONS OP URINE. Fig. 1. Fig. 2.
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-J§B Uric acid. C10H.N i-Joo of an inch I L x 130. (To face page 133. URIC OR LITHIC ACID. 139 genised products resulting from the disintegration of muscular tissue;and such a view of its nature is supported by the readiness with whichit is decomposed into urea, creatinine, and sarcosine. It is found ingreater quantity in muscles which have been in active exercise during life,than in those which have been quiescent. The heart yields a large quan-tity ; and more is found in animals which have been hunted to deaththan in those destroyed without being subjected to violent exercise.Creatine may, like urea, be regarded as an excrementitious substance. Guanine (CioH5W502), Sarane, Inosite (Ci2H120i2 4-4Aq.).—Strahland Lieberkiihn have discovered a substance in urine which they con-sidered to be xanthine, but which, from its behaviour with reagents,may probably be regarded as guanine. Strecker has detected in urine asubstance closely resembling sarcine, found in muscular fibre; but itsexa

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