LIST OF ILLUSTRATIONS 



PAGE 



Portrait of George John Romanes .... Frontispiece 



Diagram of Prof. Weismann's Tlieories 43 



Fig. I. Guinea pigs, sliowing gangrene of ears due to injuiy of 



restiform bodies . . , . . . Il8 



Fig. 2. Old Irish Pig (after Richardson) 188 



Fig. 3. Skulls of Niata Ox and of Wild White Ox . . . 19a 



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



