. A practical treatise on medical diagnosis for students and physicians . nsists of fine granular particles muchresembling amorphous urates, but distinguished from them by not disap-pearing upon the application of heat, but instantly dissolving when theurine is acidulated. Crystalline phosphate of lime is a not infrequent deposit. It is foundas narrow-wedged crystals, occasionally grouped in the form of stars,sheaves, or bundles, with their apices at a common centre. According to Roberts, this deposit in quantity is an accompanimentof some grave disorder. He has found the stellar phosphates in
. A practical treatise on medical diagnosis for students and physicians . nsists of fine granular particles muchresembling amorphous urates, but distinguished from them by not disap-pearing upon the application of heat, but instantly dissolving when theurine is acidulated. Crystalline phosphate of lime is a not infrequent deposit. It is foundas narrow-wedged crystals, occasionally grouped in the form of stars,sheaves, or bundles, with their apices at a common centre. According to Roberts, this deposit in quantity is an accompanimentof some grave disorder. He has found the stellar phosphates in cancerof the pylorus, once in phthisis, and more than once in patients ex-hausted by obstinate rheumatism. It may, however, occur in healthwhen the urine is rich in lime and its acidity greatly reduced. In one or two cases of renal colic the writer has observed numerousshining particles, which upon microscopical examination have been OXALURIA. 665 sliown to bo i opalescent iilni covered with small, sharp phosphatic(probably calcium) crystals. (Fig- 243.) , Fig. Opalescent film in a case of reual colic. (Original.) Oxalate of Lime. Oxalate of lime occurs in the form of small oc-tahedral crystals, or more rarely as dumb-bells, and in the form ofovals or disks. It is precipitated almost always from acid urines. (, Fig. -2 ■ and Fig. 244.) Fig. 244.
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