VIRILE SENTIMENT 89 



There is, indeed, one somewhat remarkable case 

 where a woman kept her husband in ignorance of her 

 condition for twenty years. Human nature being 

 what it is, we must expect some deficiency in the 

 numbers of the afflicted in this and other pedigrees. 



The next case that I have to deal with is one for 

 which I am indebted to the kindness of Dr. Drinkwater 

 for his permission to use. It is a case of congenital 

 asthma. There are altogether twenty-three indi- 

 viduals in the pedigree. The case is typically 

 Mendelian. One individual extracted from a line 

 in which the disease is present is free from it, and 

 he married a normal person and had all normal 

 children, three in number. The other extracted 

 normal persons have not married. But four of those 

 suffering from the disease have married normal 

 people. The asthmatic condition is shown by the 

 history of this pedigree to be dominant. We shall, 

 therefore, expect in the offspring of these marriages 

 an equal number of asthmatic and normal persons. 

 There are, in fact, ten of each. Thus in the complete 

 segregation of the normal and asthmatic characters, 

 in the breeding true of the extracted recessive (normal) 

 character, and in the proportion of the two kinds of 

 offspring from pairs of parents one of which is asth- 

 matic and the other normal, the case is a definitely 

 Mendelian one. It is of some interest to note, in 

 passing, that of the members who have married 

 from this family four of them (two brothers and 

 two sisters) are affected, and one only (a brother) is 

 normal. This is a fact of some importance to students 



