Above, two bees, two marmots, a tropical palm, a heron and a crane; below, two spiders, a treelike plant, two fish and a tunicate animal of the class Ascidiacea. Engraving by Heath.

Licence: Public Domain Mark

Credit: Above, two bees, two marmots, a tropical palm, a heron and a crane; below, two spiders, a treelike plant, two fish and a tunicate animal of the class Ascidiacea. Engraving by Heath. Wellcome Collection. Source: Wellcome Collection.