Complementary blotter Chemist A H Bull. Pied Piper & Children
Licence: In copyright
Credit: Complementary blotter Chemist A H Bull. Pied Piper & Children. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0032386/full/800%2C/0/default.jpg)
Licence: In copyright
Credit: Complementary blotter Chemist A H Bull. Pied Piper & Children. Wellcome Collection. Source: Wellcome Collection.