Above, a toucan, two frogs, a bird, an avocet, two sprigs of plants (soapwort and rheum); below, a two horned rhinoceros, three beetles of the genus scarabaeidae, a salmon, and a squirrel. Engraving by Heath.

Licence: Public Domain Mark

Credit: Above, a toucan, two frogs, a bird, an avocet, two sprigs of plants (soapwort and rheum); below, a two horned rhinoceros, three beetles of the genus scarabaeidae, a salmon, and a squirrel. Engraving by Heath. Wellcome Collection. Source: Wellcome Collection.