From an article published in the New York _Medical Times_ of March, 1872, from the pen of Dr. J. G. Kerr, of Canton, China, we learn that phimosis is not an uncommon occurrence among the Chinese. As has been demonstrated by C. H. Mastin, of Mobile, climate is a great factor of calculus. ("Transactions International Medical Congress" of 1876, page 609.) That of China seems a most favorable climate in this regard; so that, between the prevalence of phimosis among the Chinese and the calculus-producing tendency of the climate, China may be said to be the classic land of preputial calculi, as England is that of the gout, or the United States that of delirium tremens. From Dr. Kerr we learn that the occurrence of these concretions were, as a rule, multiple, and that in two cases that fell under his observation the number of stones from each individual exceeded one hundred. In one case there were forty, and in three cases there were between twenty and thirty. These were of different sizes and weight, some being an inch and five-eighths in diameter, and from that size down to where one hundred and sixteen taken from one individual case only weighed one ounce. The tendency to calculous disease in that climate may well be imagined, when the same observer relates a case of urinary infiltration into the skin on the under side of the penis that gave rise to the formation of a collection of calculi in that locality, four of which were the size of pigeons' eggs; and another case in which a urinary fistula induced the formation of a calculus in the groin, near the scrotum, the calculus weighing two and a half drachms and measuring one and a half inches by three-quarters of an inch in diameter. Claparede mentions a case in the practice of M. Dumeril, in which the stone extracted from the prepuce weighed two hundred and twenty-five grammes, or about eight ounces. Civiale speaks of a young man of twenty with phimosis, who, after practicing sexual connection for the first time, experienced pain and a purulent discharge, from whom, on examination, he removed five stones as large as prunes. The patient had felt them in their position, but had imagined the condition to be a natural one. E. L. Keyes gives their composition as being of calcified smegma, urate of ammonium, triple and earthy phosphates and mucus, and as symptoms and results: pain, purulent discharges, interference with urination and the sexual act, involuntary emission, ulceration of the preputial cavity, and impotence. Enoch mentions a child of two years in the Charite, who, being operated upon for phimosis, was found to have a preputial calculus occluding the urethral meatus. At the autopsy a calculus as large as an egg was found in the bladder. The presence of these formations, although not necessarily dangerous in themselves, may, by their effects and in the irritation they induce, be the means of producing serious mischief. The only preventive or remedy for this condition is circumcision.