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Searching for John Snows

by Steven Berlin Johnson on June 27, 2012

Sometime in the early 1840s, a British doctor and statistician named William Farr took control of the Weekly Returns Of Births And Deaths, a publication of the Registrar General’s office where Farr worked. Variants of the Weekly Returns had been published by the state for at least two centuries before Farr took over, but for most of that time the Returns recorded only the name of the newly born or newly dead, and the parish where they resided. But Farr was what we would now call an Open Data advocate, and over time he greatly expanded the information disseminated through the Weekly Returns. By the mid 1850s, the Returns tracked age, cause of death, occupation–even the elevation of the dead’s primary residence. (Farr believed that people living in higher altitudes had healthier lives.) Inspired by a debate with one of his contemporaries, the Soho doctor John Snow, Farr even added information on the deceased’s regular source of drinking water.

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