Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . g. 128) is partly composed from the preparations of thissediment. [Dr. Ordul has observed a deposit of indigo in the alkaline urine ofa patient who had long suffered from enlarged prostate. In this case,besides pure indigo, there were several bodies stained by that them were crystals of urates and phosphates, epithelium, yeast-cells, and bacteria. In this way, as Ord points out, the form of theindigo is determined by the form of the bodies on which it is deposited.] 3. Urate of Ammonium.
Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . g. 128) is partly composed from the preparations of thissediment. [Dr. Ordul has observed a deposit of indigo in the alkaline urine ofa patient who had long suffered from enlarged prostate. In this case,besides pure indigo, there were several bodies stained by that them were crystals of urates and phosphates, epithelium, yeast-cells, and bacteria. In this way, as Ord points out, the form of theindigo is determined by the form of the bodies on which it is deposited.] 3. Urate of Ammonium.—Urate of ammonium forms spherical bodies, PHOSPHATE OF MAGNESIA—CHOLESTEEIN 289 dark in colour and of varying size. Their circumference is beset withradiating spicules of crystalline structure (fig. 129). [Hence they areknown as hedgehog crystals.] They are soluble in hydrochloric andacetic acids, with the formation of uric acid, which is deposited in theform of rhombic tables. 4. Phosphate of Magnesia.—The crystals of this salt have beenalready (fig. 120) sufficiently Fig. 129.—Crystals of Urate of Ammonium, Sediment in Alkaline Fermentation (eye-piece II.,objective 8a, Reichert). 5. Cholesterin.—Crystals of cholesterin are very rarely to be seen inthe urinary sediment. The author has observed them but once, andthat was in the case of a man who suffered from tabes and cystitis. Thecholesterin took forty-eight hours to deposit in crystals. The urinewhen freshly voided had a slightly acid reaction, was turbid, and whenshaken, a great number of scaly particles could be seen in it with thenaked eye (fig. 130). A. Glins/riU2 quotes a similar observation.
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