INTRODUCTION. XV it spread to Sujat (population, 6,000) and Jodhpur (capital of Marwar); affecting all the intervening towns and villages. From June to March 1837, it attacked the villages of Dewair, Deoghar, Lucanithana, Bednore, Jalia and Ranghar (Ajmere). In April 1837 it spread in the direction of Neemuch Cantonment, two villages in Merwar being attacked. Towards the end of 1837 it again appeared in Pali and did not die out until the Spring of 1838. The total mortality of this epidemic is not known with any certainty ; but it is estimated that 100,000 Marwaris perished. Apart from these great epidemics which have occasionally visited India, and apparently unconnected with them, there is an epidemic centre of plague at Grharwal and Kumaun at the foot of the Himalayas. These two Dis- tricts, situated in the North-West Provinces, with an area of over 11,000 square miles, contain a population of nearly 1,000,000 persons. The disease is here called mahamari ; but Assistant Surgeons Francis and Pearson, who investigated the disease locally in 1852, arrived at the following conclusions :- (1 ) Mahamari and Plague are identical. (2) Mahamari is of local origin : capable of transmission from person to person and place to place. (3) That it is gradually extending itself, and that there seems no reason why it should not be developed in the surrounding country. À little more detail as regards former epidemics in Districts in this Presidency is given in the chapters devoted to the recent outbreaks of Plague in such Districts ; but for full details, " Nathan's Plague in India," 1896-97, Vol. I., should be consulted.