30 mai 1854 - Cholera & John Snow
Description:
John Snow got authorities to remove the pump handle at the Broad Street pump in Soho, the cause of cholera outbreak at the time. 60% of people who drank water from this pump had cholera. Led Snow to believe that cholera was cause by dirty water and not miasma.Ajouté au bande de temps:
Date:
30 mai 1854
Maintenaint
~ Il y a 171 ans