A cow's udder with vaccinia pustules and human arms exhibiting both smallpox and cowpox pustules. Coloured engraving by J. Pass, 1811.

London : [publisher not identified], Published as the Act directs 1 May 1811.

1 print : stipple engraving and etching, with watercolour ; platemark 26.4 x 20.2 cm

Inoculation. 1. A cow's udder affected with vaccina. 2,3,4. Vaccine vesicles on the human arm. J. Pass sc. 5. A papulous eruption which sometimes occurs during vaccination. 6. Smallpox & the cowpox on the same arm.

Wellcome Collection 20186i