31 but over very large tracts of country the disease was absolutely unknown for a considerable portion of the year. How feeble the cholera influence had become, and how it had worn itself out, in this the sixth year of its existence, may be illustrated by the following quotation from the report of the Inspector-General of the Indian Medical Department on Civil Dispensaries for 1868. "In the Salem District an outbreak of cholera was reported in January, which at first seemed to assume such alarming proportions, that extra medical aid was sent from Madras, at the Collector's request. The disease, however, proved so remarkably amenable to treatment, and the mortality so unprecedentedly small (under nine per cent.), that the inference is that the epidemic must have been chiefly, if not entirely, one of bilious cholera or choleraic diarrhœa." Cholera in Madras during 1868. 46. In the European and Native Armies, and in the Jails of Southern India, cholera was almost unknown in 1868. There were five fatal cases amongst European Troops, but four of these occurred at Kamptee, the Military Station of Nagpore, which station came under the influence of the new invasion, and one at Thayetmyoo, in British Burmah. Amongst the Native Troops there occurred forty cases, and eighteen deaths. In the thirty-nine Jails of the Madras Presidency there were only eight cases, and four deaths. The entire civil population of 26,000,000, which in 1866 (the third year of a cholera invasion) lost in round numbers 200,000 persons from cholera, had only 8,023 casualties from this cause in 1868, and this mortality was chiefly confined to the districts of Salem, Tanjore, and Trichinopoly, in which we have seen that the epidemic wave of former years had nearly exhausted its strength. And as regards the season of prevalence, it may be said that nearly all these 8,023 deaths occurred in the early months of 1868, and that cholera, as an epidemic, was dead throughout the Presidency in April 1868. Cholera confined mainly to Salem, Tan- jore, and Trichinopoly in 1868. 47. Dr. Bryden has recently, with great labour and patience, shown how the cholera epidemics of recent years have occupied certain areas in the North-West, and Central Provinces of India. It has been reserved for me to illustrate in what manner, and at what distance of time, these explosive waves of cholera from the Bengal endemic field, make themselves felt in the southern districts of the Indian Peninsula. The movement of cholera in a south- easternly direction over Burmah and China yet to be investigated. To Dr. Bryden we are indebted for a careful study of the movement of cholera, as observed in Northern and Central India. There yet remain to be registered the facts, as to the movements of cholera in an eastern or south-eastern direction, over Burmah, China, Cochin China, and South-eastern Asia generally. When this has been done, and with the present data for the history of recent epidemics of Southern India placed on record, there will be sufficient facts accumulated for determining the share aerial influences may have played in the diffusion of cholera in the eastern hemisphere. In the Appendix to this report will be found tables of the prevalence of cholera in the Madras Army stationed in Burmah, from the year 1859 down to 1865. The Sanitary Commissioner of British Burmah will be able to supply the further data for the Civil population, from that period. Dr. Bryden has already indicated a new outburst of cholera from the great endemic centre in 1868. The map drawn by him, to illustrate the annual report for 1868 of the Sanitary Commissioner with the Government of India, does not, however, represent the whole truth, though it is quite I