In August of 1849 Snow published a pamphlet entitled, On the Mode of Communication of Cholera. This pamphlet proved his theory on the cause of cholera through the many examples given. Publishing a highly debatable essay like this was done at his own risk, but Snow felt that he had demonstrated a relatively reasonable argument in his pamphlet.
He had argued earlier that it was not an airborne disease in his published essay, On the Mode of Communication of Cholera, in 1849. The germ theory was not developed at this point, so Snow was unaware of the mechanism by which the disease was transmitted, but evidence led him to deduce in 1854 that it was not due to breathing in foul air.
Snow expanded his reports on his cholera research in a book entitled On the Mode of Communication of Cholera published in London the same year. That book contained more statistical data confirming his theories. Over the next five years Snow continued his research, publishing a second edition of the book in 1855. This was so greatly revised and expanded that it was essentially a new work.
Description. Two of the most influential urban medical maps of the 19th century were those in Dr John Snow’s essay On the mode of communication of cholera, 2nd edition, 1855.Snow was convinced that cholera was carried by contaminated water, and his report contained a map (a facsimile of which is shown above) that plotted the location of the water pumps in the Soho area and the distribution.
On the mode of communication of cholera was a scientific text written by dr. john snow in 1855 about the disease cholera. what are the two primary purposes of this text? to persuade officials and citizens to be more conscious about sanitationto inform readers about new ideas about the disease using.
John Snow was born in York in 1813. He moved to London in 1836 to begin his medical education, graduating in 1844. At that time, in London and across the country, outbreaks of cholera were widespread. It was believed to be an air-borne disease. However, Snow did not accept this theory and set out his own ideas in his work On the Mode of Communication of Cholera, published in 1849.
Cholera is an infectious intestinal disease common in Southern Asia. Cholera is caused by a comma-shaped bacterium called Vibrio Choleras. The microorganism is transmitted by water or food that has been contaminated with the feces of people who have the disease. Cholera occurs when Vibrio Cholera enters the intestines and releases Cholera toxin.
At the time, it was assumed that cholera was airborne. However, Snow did not accept this 'miasma' (bad air) theory, arguing that in fact entered the body through the mouth. He published his ideas in an essay 'On the Mode of Communication of Cholera' in 1849. In 1854 Snow was able to prove his theory when a cholera outbreak occurred in Soho.