As like causes produce like effects, we need not be surprised at this high rate of mortality, for, says Professor Aikin, "taking the whole number attacked, it is said that the number of deaths in Astrakan were _as one to three_; in that of Nizhni Novgorod, _as one to two_; in Moscow and Kazan, _as three to five_; and in Penza, in the country of the Don Cossacks, _as two to three_. In the summer of 1831 the mortality at Riga, St. Petersburg, Mittan, Limburg, and Brody, according to the _Berlin Gazette_, was _about one-half_, while at Dantzic, Elbing, and Posen it was _about two-thirds_ of the whole number attacked. The period of the epidemic, however, greatly influenced the mortality; for on the first onset, _nine-tenths_ of all those attacked perished, then _seven-eighths_; and the proportion of deaths forms a gradually decreasing series of _five-sixths_, _three-fourths_, _one-half_, _one-third_, till, towards the close, a large proportion of those attacked recovered. The uniformity of this law in every country affected with cholera, whether Europe, America, India, or China, is extremely remarkable." This high rate of mortality is truly and peculiarly illustrative of the inadaptation of the general mode of the so-called regular practice to the pathology of the disease. This, no doubt, is the main cause of its failure, and justly exposes it to the unenviable distinction of being empirical. The practice of Dr. Beach, the physician of the Tenth Ward of this city, during the prevalence of the cholera in 1832, embraced about one thousand cases, of which only a small percentage was lost. One of his associates, Dr. Hopkins, reported 157 cases, of which only 6 died, being less than 4 per cent., which probably is not much below the general average of the other districts in that ward at that time. Mr. Forward, an unprofessional gentleman of Kentucky, treated a large number of cases, during the prevalence of the disease among his employees, numbering over two hundred, without the occurrence of a single death. Another instance similar in principle is that of Dr. Browne, who reports a case treated by rectified oil of turpentine, with the most satisfactory and happy result. So, too, the late Dr. Sharp, of Paris, Ky., adopted a similar principle of practice, and became, thereby, eminently distinguished for the cure of cholera; his percentage of loss being very small indeed.