Laub (leaves) from Lorenz Oken’s Atlas of Living Things, 1833-1834

Plants (Grops) from Lorenz Oken’s Atlas of Living Things, 1833-1834

Flammarion engraving attributed to Camille Flammarion, c. 1889

How To Draw Frogs, Dragonflies, Water Lilles and Tadpoles, 1913 - Postcard

Phaeodaria by Ernst Haeckel's Kunstformen der Natur, 1904

Acanthophracta by Ernst Haeckel's Kunstformen der Natur, 1904

Anthomedusae by Ernst Haeckel's Kunstformen der Natur, 1904

Aspidonia by Ernst Haeckel's Kunstformen der Natur, 1904

Asteridea by Ernst Haeckel's Kunstformen der Natur, 1904

Gorgonida by Ernst Haeckel's Kunstformen der Natur, 1904

Ostraciontes by Ernst Haeckel's Kunstformen der Natur, 1904

Peromedusae by Ernst Haeckel's Kunstformen der Natur, 1904

Melethallia by Ernst Haeckel's Kunstformen der Natur, 1904

Bryozoa by Ernst Haeckel's Kunstformen der Natur, 1904

Echinidea by Ernst Haeckel's Kunstformen der Natur, 1904

Tetracoralla by Ernst Haeckel's Kunstformen der Natur, 1904

Discomedusae by Ernst Haeckel's Kunstformen der Natur, 1904

Discoidea by Ernst Haeckel's Kunstformen der Natur, 1904

Ophiodea by Ernst Haeckel's Kunstformen der Natur, 1904

Talamophora by Ernst Haeckel's Kunstformen der Natur, 1904

Narcomedusae by Ernst Haeckel's Kunstformen der Natur, 1904

Cyrtoidea by Ernst Haeckel's Kunstformen der Natur, 1904

The Pontic Rhododendron by Robert John Thornton - 1807