VIRILE SENTIMENT 85 



prediction. Both classes of individuals are present, 

 and in very nearly equal numbers. There are eighty 

 individuals from this type of marriage, and therefore 

 it is expected that there will be forty each of the 

 abnormal and normal individuals. There are respec- 

 tively forty-two and thirty-eight. With regard to 

 the second type of marriage, i.e., R R x R R, the 

 expectation is that all the offspring will be normal. 

 There are eighty individuals,* all normal. 



The family which we have just considered is an 

 English one. But a case of the same nature, dealing 

 with an American family, was earlier published by 

 Mr. Farabee. In this case the same principles are 

 manifested. The extracted recessive (normal) charac- 

 ter breeds true, and the offspring from a marriage 

 of a parent with " short fingers " with one of normal 

 fingers is composed of the two types of individuals, 

 and in approximately equal numbers, i.e., thirty-six 

 of abnormal individuals to thirty-three of normal ones, 

 the expectation being thirty-four and a half of each. 

 These two cases of human brachydactyly, then, are 

 clearly Mendelian in nature. Segregation and gametic 

 purity explain the phenomena presented by them, 

 while the blending hypothesis and the biometrical 

 " Law of Ancestral Inheritance " completely fail. 



I pass now to the second and perhaps one of the 

 most important cases of a human pedigree. We owe 

 its compilation in part to a French Army surgeon, 

 the late M. Florent Cunier, and in part to an English 



* In addition to these there are a few individuals known to have 

 existed, but the sex and type is now not known. 



