Sir William Bayliss: "Brown dog" experiment.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Sir William Bayliss: "Brown dog" experiment. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Sir William Bayliss: "Brown dog" experiment. Wellcome Collection. Source: Wellcome Collection.