2636. Ox. of lime and ur. acid. Surface, 4'". Irregularly shaped concretion.
2637. Ox. of lime and ur. acid. Diameter, 4'". Pyriform. Ex- terior covered with beautiful transparent, tabular crystals of ox. of lime.
2638. Small, compressed, oval, mulberry calculus. Ox. of lime, with a little ur. ac. and phosph. of lime. 9'" by 1'".
2639. A calculus, removed from the bladder by the finger. The patient was a married woman, set. thirty-four years,
and had had frequent and painful micturition for about four months ; she was constantly getting worse, and the urine was toward the last ropy and offensive. About a year before, a small calculus had been passed. The fore- finger was passed without much force through the urethra ; and, with the aid of the other hand in the vagina, the cal- culus was removed. It is of an irregularly triangular form, about 1| in. by f in. in its largest diameters, and con- sists of the triple phosphate of ammonia and magnesia, carb. of lime, and ur. of ammonia. "With it was a second calculus, about the size of a pea, and of a flattened form ; and, the bladder having been fully explored by the finger, no others were found. Relief from the operation com- plete. (Hospital, 124, 151.) 1867.
Dr. E. M. Hodges.
2640. Nodulated, reniform calculus of ox. of lime, with a little ur. of the same ; presenting the appearance of numerous distinct nuclei. 4'" by 3"'. 1847. Dr. J. G. Warren.
2641. Oval. Centre, ox. of lime. Body composed of urates of ammonia and lime, forming a soft, porous compound. Exterior sanded. 1" 7"'by 1" 2"'. 1800.
Dr. J. Nichols.
2642. External layers of an oblong flattened stone. Urates of ammonia, soda and magnesia, and ox. of lime. Centre lost. 2" 6'" by I" 7'". 1800. Dr. J. Nichols.
2643. Oblong, spheroid. Darker portion inside is composed of ox. of lime, with a little urate of the same. Outer part made up of ox. and phosph. of lime, ur. of lime in consid- erable amount, and urates of soda and ammonia. 2" 5'" by 2" 1'". Dr. J. G. Warren.
2644. Compact, triangular, prismatic stone. Ox. of lime, in-
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