544 MORBID ANATOMY.
Weight of the stone and fragments, when first removed, 13 dr. 2 sc. and 4 gr., Troy. The analysis was made by Dr. D. H. Hayden. 1870. Dr. H. G. Clark.
The next thirty specimens were given in 1800, by
Dr. J. Nichols.
2562. Uric acid, urate of ammonia, and ox. of lime in slight proportion; 1" 8'" by 1" 4 /// . Ovoid. Exterior slightly tuberculated, and upon each surface two longitudinal de- pressions separated by a ridge. Cortex porous and light. Nucleus of a purplish-brown color, and compact. Both halves.
2563. Nucleus of ur. ac. and ur. of ammonia. Outer layers of oxalate of lime ; regular, well-marked, compact. 1" by 1'". Shape, irregular ; surface, smooth ; color, pale.
2564. Nucleus of ur. of ammonia ; ur. ac. slight. Outer lay- ers, ox. of lime. Large tubercles on exterior. Deep fawn color. Shape, irregular. Size, 10'".
2565. Very rough, spherical, mulberry calculus. Nucleus irreg- ular in shape ; ur. of ammonia, and a little ur. ac., suc- ceeded by ox. of lime. Interstices between the ray-like laminae filled with the urate. 1" 3"' by 1" I'".
2566. Dark, round, mulberry stone. Nucleus, ur. ac. and ur. of ammonia. Exterior, ox. of lime. Much organic mat- ter, consisting of dried blood, epithelium, etc., between nucleus and the oxalate. 1" 2'" in diameter.
2567. Irregularly shaped, botryoidal calculus. Nucleus ur., ac. and ur. of ammonia ; and the same is interspersed amidst the very irregularly deposited layers of oxalate of lime, which form nearly the whole of the exterior. 1" 6'" by 1" 4 W .
2568. Spherical calculus, made up of alternate layers of ox. of lime and ur. ac., with ur. of ammonia. Nucleus com- posed of the last two substances. Exterior covered with a distinct coating of large crystalline concretions of ox. of lime, coral-like in aspect. 1" 3"' in diameter.
2569. Large, pale calculus, of a long oval shape. Nucleus ; ur. ac., much ur. of lime, and a little ur. of ammonia. Outer part made up of ur. ac., much ur. of lime, and a little ur.
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