8 LIST OF ILLUSTRATIONS 



A SiPHONOPHORE. .... Facing 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 



