Index. 



181 



T. 



Topographical distribution and 

 physiological selection, 74 ; of 

 varieties, 81. 



Transformation, serial and di- 

 vergent, 21, 121. 



V. 



Variability and self-fertilization, 



177. 



Variation in birds, 34. 

 Varieties, topographical distribn- 



tion of, 81. 



W. 



WAGNER, Maritz, 3 ; on geo- 

 graphical isolation, 76 ; quoted, 

 103 ; law of migration, I n. 



WALLACE, Mr. A. R., 3, 17; 

 quoted, 34, 47, 51, 57, 130-136; 

 criticized by Gulick, 152. 



WEISMANN, Prof., on geographical 

 isolation, 76, 114-118. 



Weismannism and physiological 

 selection, 169. 



