A practical treatise on urinary and renal diseases : including urinary deposits . ion. Uric acid crystals may form a filmon the surface, or lie scattered as brilliant brown specks on thesides of the glass, or subside into a dense red deposit likecayenne pepper. The naked eye is nearly always sufficient toidentify uric acid with certainty, because no other browncrystals occur in urine as a spontaneous deposit. When thecrystals are very minute, the deposit resembles the amorphousurate, but is denser, and sinks more rapidly. Urine depositinguric acid has commonly a rich yellow or orange colour, a
A practical treatise on urinary and renal diseases : including urinary deposits . ion. Uric acid crystals may form a filmon the surface, or lie scattered as brilliant brown specks on thesides of the glass, or subside into a dense red deposit likecayenne pepper. The naked eye is nearly always sufficient toidentify uric acid with certainty, because no other browncrystals occur in urine as a spontaneous deposit. When thecrystals are very minute, the deposit resembles the amorphousurate, but is denser, and sinks more rapidly. Urine depositinguric acid has commonly a rich yellow or orange colour, and isinvariably acid. Micro-chemical characters.—The primary form of uric acid isa rhombic prism or lozenge, and to some modification of thisfigure the protean diversities of uric acid crystals may all bereferred. The angles of the crystals are sometimes almostequal, and then quadrangular tables or almost perfect cubesare obtained (Fig. 4, a b). URIC ACID. 61 More frequently the angles are rounded off (c d) so as toproduce ovoids and barrel shapes. A still greater elongation. Fig. 4. The simpler forms of uric acid crystals—quadrangular and oval tablets,cubes, six-sided tablets, lozenge and barrel-shaped figures. produces a rod, and when a number of these are joined toge-ther in a common centre, stars are produced. The beauty and
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