LIST OF ILLUSTRATIONS 



PAOB 



Portrait of George John Romanes .... Frontispiece 

 Diagram of Prof. Weismann's Theories 43 



FlG. I. Guinea pigs, showing gangrene of ears due to injury of 



restiform bodies Il8 



FlO. a. Old Irish Pig (after Richardson) 1 88 



FlG. 3. Skulls of Niata Ox and of Wild White Ox . . 193 



FlG. 4. Lower teeth of Orang (after Tomes) .... 267 



