
The cover image was created by the transcriber and is placed in the public domain.

ERNST HAECKEL.
From the Painting by Franz von Lenbach, 1899.
(Reproduced in “Jugend.”)
| PAGE |
| Introduction | 9 |
| Early Youth | 15 |
| At the University | 51 |
| The Radiolaria | 82 |
| Darwin | 102 |