List of Illustrations
| Haeckel From the painting by Franz von Lenbach. | [Frontispiece] |
| Jena | [42] |
| A Fishing Party in Heligoland in 1865 Ernst Haeckel, Anton Dohrn, Richard Greeff, Max Salverda, Pietro Marchi. | [70] |
| A Radiolarian | [94] |
| Haeckel From the bust by G. Herold. | [128] |
| Haeckel in 1880 | [154] |
| Haeckel in 1890 From a relief by Kopf. | [178] |
| Haeckel’s Villa at Jena | [216] |
| Haeckel and his Assistant Miklucho-Maclay at Lanzarote, in the Canaries, 1867 | [244] |
| A Siphonophore | [248] |
| Haeckel in 1874 | [272] |
| Haeckel in 1896 From a photograph by Gabriel Max. | [292] |
| Haeckel and a Group of Italian Professors at Genoa, 1904 | [300] |