. Urinary analysis and diagnosis by microscopical and chemical examination. 0 y W ^ JT ^g^ ^* ^ —* Fig. 30.—Sediment in the Urine of an Athlete (X 500). CRYSTALLINE AND AMORPHOUS SEDIMENTS. 81 of sodium urate, and peculiar formations, consisting partly of fan-shapedand partly of angular crystals, from which a varying number of longneedles are seen to emanate. Some of these crystals resemble rarer formsof ammonium urate. Clinically, creatinin has been found in cases of severe acute paren-. Fig. 31— Hippuric Acid (X 500). chymatous nephritis, associated with ursemic convulsions, and has alsobeen
. Urinary analysis and diagnosis by microscopical and chemical examination. 0 y W ^ JT ^g^ ^* ^ —* Fig. 30.—Sediment in the Urine of an Athlete (X 500). CRYSTALLINE AND AMORPHOUS SEDIMENTS. 81 of sodium urate, and peculiar formations, consisting partly of fan-shapedand partly of angular crystals, from which a varying number of longneedles are seen to emanate. Some of these crystals resemble rarer formsof ammonium urate. Clinically, creatinin has been found in cases of severe acute paren-. Fig. 31— Hippuric Acid (X 500). chymatous nephritis, associated with ursemic convulsions, and has alsobeen seen in the urine in typhoid fever, pneumonia, and diabetes. 6. Hippuric Acid.—Hippuric acid, which is present in all normal urine, is almost always held in solution, though it may be found in small amount after a vegetable diet and after eating certain fruits, such as ranberries, plums, and prunes. In the urine of herbivorous animals, 6 82 URINARY ANALYSIS AND DIAGNOSIS. especially in horses, it is of common occurrence. It is found in largeramount after the administration of benzoic acid or one of the benzoates,salicylic acid, cinnamic acid, and oil of bitter almonds. It has also beenseen occasionally in diabetes. It consists (see Fig. 31) of variously sized, colorless prisms and plates,often conglomerated into larger or smaller masses. The plates may be
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