8 LIST OF ILLUSTRATIONS 



A SIPHONOPHOEE. .... Faciitg p. 248 



HAECKEL IN 1874 . . . 272 



HAECKEL IN 1896 . . . 292 



From a photograph by Gabriel Max. 



HAECKEL AND A GROUP OF ITALIAN PROFESSORS 



AT GENOA, 1904 . 300 



