Technology versus assumptions
Epidemics of cholera and dysentery in cities in the Nineteenth Century were often attributed to a ‘Miasm’ – plural form ‘Miasmata’ – a form of foul air, often with a sinister and mysterious Supernatural origin. Attempts to prevent these epidemics by scientific measurement and precise engineering were often delayed by debates centred on these theories of origin.
In this study of the London Cholera epidemics of 1831, 1848 and 1854 the author describes how they were finally resolved by technologies now taken for granted, following the work of many scientists, including Dr John Snow and Joseph Bazalgette. The aim is to illustrate the study with quotations from a journal of the time, as well as Joseph Bazalgette’s writings, and a description of the engineering works which finally resolved the problem.
The reason for this study is that the author sees many similarities between the thinking of the 19th century on infections, and the 21st century assumption that global warming is due to atmospheric carbon retention, despite the complete lack of evidence that work based on this theory has done anything to reduce the temperature of the Earth over the last 50 years.
Finally, the author plans to show some of the similarities between the methods proposed for cooling the world (i.e. removing heat in air or water and transferring it to a safe location above human habitation) and those which work so successfully in the sanitary systems of the world’s twenty-first century cities (i.e. directing the harmful, foetid material along defined sewers to remove it quickly from proximity to human beings, and especially from drinking water).
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