182 



INDEX 



Relationship coefficients, 133 ff. ; 



defined, 143, 145. 

 Resemblance between individuals, 



S, 10, 15, 64. 

 Ritter, 55. 

 Royee, 14, 74, 85, 88. 



Saturation, 172. 



Scott, 165. 



Segregation, 25, 45, 174. 



Selection, 15, 48, 175. 



Sex chromosomes, 26. 



Shull, 17. 



Single cousins, 121, 122, 125. 



Skewness, 81. 



Somatogenesis, 5, 12, 35. 



Specificity, germinal, 8, 12. 



Specificity, somatogenic, 5, 8. 



Spillman, 24. 



Statistical knowledge, 73 ft". ; an- 

 alysis of, 79; exactness of, 

 81. 



Statistical method, possibilities 

 of, 83. 



Statistical probabilities, 92. 



Strang, 102. 

 Surface, 16, 58, 66. 

 Symmetry of distributions, 81. 



Systematic zoology, 56. 



Telegony, 172. 



Tobacco, selection experiments 



with, 16. 

 Tretsven, 168. 

 Trow, 27. 



Uncle X niece mating, 126 ff. 

 Unit characters, 173. 



Valentine, 166. 

 Variability, 8. 

 Verworn, 41. 



Weldon, 42. 

 Wheat, yield of, 166. 

 Whitten, 166. 

 Williams, 166. 

 Wilson, 33. 



Yule, 22, 71. 



Printed in the United States of America. 



