The next five specimens were given in 1847, by
Dr. J. C. Warren.
2612. Oval. A large gap occurs, which must have been formed in the bladder. Nucleus, ox. of lime, ur. ac., and the urates of lime and ammonia ; a black lamina of coagula may have rendered the fracture less difficult. Its exterior and the crack are coated with a deposit of phosph. and carb. of lime, and triple phosph. of ammonia and magne- sia. 2" by 1" 8'".
2613. Spherical. Nucleus, ox. of lime, with a little ur. ac., and urates of soda and ammonia. This is followed by a less compact deposition of ox. of lime, and urates of am- monia and soda. Exteriorly is a layer of phosph. and carb. of lime. 1" 9"' by 1" 7'".
2614. Irregular, ovoid. Nucleus compound, and composed of ox. and ur. of lime, ur. of ammonia and ur. ac. About this are deposited, at first regularly and afterward eccen- trically, ur. of ammonia, ox., carb., and phosph. of lime ; the yellow streaks being composed of the ox. and ur. 2" 6'" by 1" 9'".
2615. Irregulary ovoid, and constricted towards one extremity. Nucleus, ur. ac., urates of ammonia and lime, and ox. of lime. About this is a regular deposit of phosph. and carb. of lime ; then a layer of ur. ac., urates of ammonia, and lime ; and then a large amount of carb. and phosph. of lime, and triple phosphate. Human? 3" 5"' by 2" 7'".
2616. Oval. Ur. ac., ur. of ammonia, phosph. of lime and triple phosph. The ends are wanting in ur. acid. 1" 10"' by 1" 4'".
2617. A calculus If in. by 1| in., and of a somewhat rounded form. Hard, laminated, and, for the most part, of a reddish- brown color ; this portion consisting, according to Dr. White, mainly of uric acid, with a little ur. of ammonia, and a considerable amount of ox. of lime where it borders the external shell. This last consists of the phosph. of lime, and triple ph. of ammonia and magnesia, is J in. thick at one part, but varies much, and in some places the reddish portion is exposed ; surface broadly grooved.
Removed by lithotomy from a man seventy-six years
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