Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Levy-type regulating chloroform inhaler, England, 1919-1925. Science Museum, London. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Levy-type regulating chloroform inhaler, England, 1919-1925. Science Museum, London. Source: Wellcome Collection.