566 MORBID ANATOMY.
toward the last. There was pain in the loins ; and the urine was either very copious, or very scanty in amount. During the last three or four months that Dr. P. attend- ed her she kept her bed ; and the urine always contained pus. Over one of the kidneys there was a tumor that would occasionally become much enlarged, and then sub- side upon the discharge of pus. Death finally from ex- haustion. 1869. Dr. G. W. Pierce, of Leominster.
2682. A flattened, ovoid calculus, If in. by 1J in. on cut sur- face, and having rather a chalky-white look. Concentric structure distinct, but not strongly marked. Externally fawn-colored, and somewhat rough. Consists, according to Dr. White, of ox. of lime, phosph. and carb. of lime, triple phosph. in small amount, and ur. of soda. Central nucleus of lithic acid, of a pale-brownish color, about J in. by nearly f in.
The patient was a boy, ten years of age, who entered the hospital March 14th, 1862 (101. 120). Occasional at- tacks of pain in left side, and chiefly about 2 in. above the ant. sup. spinous process of the ilium, with micturition about every thirty minutes, and great pain then in the glans. These pains came on suddenly and violently about four years before ; and previously he had been quite healthy. Was able to attend school during a part of the time. Gen- eral appearance thin and pale.
Removed by incision on the 22d ; and on the 30th of April the boy was discharged well. 1869.
Dr. H. J. Bigelow.
2683. Irregular, lenticular, chalky-looking concretion. Phosph. of lime and triple phosph. 1" 8"' by 9'". 1847.
Dr. J. C. Warren. The next four specimens were given in 1800, by
Dr. J. Nichols.
2684. Flattened spherical concretion of phosph. of lime and triple phosph. 1" 10'" in diameter.
2685. Compressed, spherical. Triple phosph. and phosph. of lime. Section shows laminae finely marked, interrupted by crevices apparently. No organic matter present to explain this coloration. 1" 8"' in diameter.
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