. A practical treatise on medical diagnosis for students and physicians . Ammonium urate. (Original.) If, however, the uric acid is precipitated before the urine cools, orimmediately afterward, it is possible that the same precipitation mayoccur within some part of the urinary channels, and so form a Triple phosphates. (Original.) Urates. Amorphous urates appear under the microscope as opaquegranular particles, which dissolve upon heating, and respond to themurexide test. The deposit is more or less dense, and is sometimesarranged so as to resemble granular casts. Sodium urate appea
. A practical treatise on medical diagnosis for students and physicians . Ammonium urate. (Original.) If, however, the uric acid is precipitated before the urine cools, orimmediately afterward, it is possible that the same precipitation mayoccur within some part of the urinary channels, and so form a Triple phosphates. (Original.) Urates. Amorphous urates appear under the microscope as opaquegranular particles, which dissolve upon heating, and respond to themurexide test. The deposit is more or less dense, and is sometimesarranged so as to resemble granular casts. Sodium urate appears as spherules or globules, from which project shortspines either straight or curved. It occurs most frequently in concen- 664 THE URINE. trated acid urines, such as are passed by children with acute febrile dis-eases. (Fig. 239.) Ammonium urate resembles sodium urate. It is frequently associatedwith phosphatic deposits, and is precipitated from alkaline urines. Some-times it appears in the shape of dumb-bells. (Figs. 239 and 240.) Phosphates. Phosphates appear in the urine as ammonio-magnesiumphosphate and as the crystalline and amorphous calcium phosphate. Theyare precipitated in alkaline or faintly acid urines, which produce a cloudupon being heated; the cloud is distinguished from albumin, as alrea
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