1(1 



CONTENTS. 



Part I. Fukther Experiments upon the Modifiabilitt op the Hooded 



Character in Rats. 



PAGE 



Selected races crossed with wild 2 



Part II. The Inheritance of White-spottinq in Rabbits, with Special 

 Reference to Gametic Contamination. 



Dutch 5 



English 19 



Relation of Dutch to English 25 



Part III. Observations on the Occurrence opLinblage in Rats and Mice. 



Tables 37 



Bibhography 56 



