watershedplus:An etching by William Heath depicting a woman dropping her tea-cup in horror upon disc
watershedplus:An etching by William Heath depicting a woman dropping her tea-cup in horror upon discovering the monstrous contents found in a magnified drop of Thames water. In the nineteenth century, sewage and waste contaminated the River Thames in London, making it a prime source of water-borne diseases such as cholera and typhoid.From Wellcome Collection via Cabinet Magazine issue 44 -- source link