On the mode of communication of cholera

Chapter 3: MAPS.

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About This Book

The author reviews the spread of cholera and compiles clinical and epidemiological evidence to explain its transmission. He presents case studies documenting person-to-person spread and argues against airborne effluvia, using pathological and fluid analyses to show the morbid agent enters the alimentary canal. Multiple outbreak investigations link localized epidemics to polluted water sources, supported by maps, tables, and comparative mortality data across different water supplies, institutions, and neighborhoods. The work assesses environmental and infrastructural factors such as water-company networks, river contamination, elevation, and dry weather that alter exposure risk.

MAPS.

Map 1. Showing the deaths from cholera in Broad Street, Golden Square, and the neighbourhood, from 19th August to 30th September 1854. A black mark or bar for each death is placed in the situation of the house in which the fatal attack took place. The situation of the Broad Street Pump is also indicated, as well as that of all the surrounding Pumps to which the public had access.

Map 2. Showing the boundaries of the Registrar-General’s districts on the south side of the Thames in London, and also the water supply of those districts.