Government of Bengal Public Health Department Malaria & Agriculture in Bengal How to Reduce Malaria in Bengal by Irrigation

Sixteen years later it was estimated that "one-fourth of the southern one-eighth of the eastern three-eighths of the western and five-eighths of the northern divisions of the district were still uncultivated and under jungle." At the time of the permanent settlement only one quarter of Mymensingh district was under cultivation and in 1839 Dr. [...] The embanking of the country and the shutting out of river water from the surface of the delta was further marked by the simultaneous occurrence of appalling epidemics of malaria a serious decline of agriculture ant the progressive depopulation of the affected areas." 21 CHAPTER II. [...] The country presents at any rate all the geological conditions suitable for the development of malarial fevers undulations of the surface hardly perceptible periodical inundations over vast tracts of land marshes and lagoons of great extent along the banks of the rivers great elevation of the temperature in summer." Bouffier (1857) speaking of the adjoining deltas of the Parana river and the [...] Lombardy during the dark ages ; the numerous rivers were unregulated and uncontrolled ; and some notices of the state of the country during the tenth century prove that the inevitable results had followed in the formation of vast marshes and the abandonment of extensive districts." Many of the in darions tracts of Italy have long since been restored from the state of ruin into which they had on [...] Western Bengal contains the deltas of the Salai the Kasai the Dhalkisor the Danmdar the Adjai and the Mor and part of the delta of the Ganges.