No. 563] EFFECT OF INTOXICATING MALE PARENT 671 



the dead fetuses which prevented the females from re- 

 covering after the operation in these three cases. 



The death of the late fetuses in utero is to be expected 

 merely as a step in the series. A number of early abor- 

 tions of embryos have occurred, and the table shows the 

 enormous fatality among the young shortly after birth, 

 as well as the frequent occurrence of stillborn litters. 

 When the young happen to die shortly before birth in- 

 stead of after birth, the female in some cases is unable 

 to expel them from the uterus. 



A consideration of a few of the notes made from the 

 individual matings will further serve to illustrate the 

 actual response of the animals to the treatment as shown 

 by the outcome of the matings. For this purpose we may 

 take two random groups. 



First a group of eleven matings made on October 30 

 and 31, 1912, resulted as shown in the following notes : 



Oct. 30, Nor. $ No. 30 X Ale. 5 = Jan. 9, 1913— One 

 normal young, No. 123 <j>. 



Oct. 30, Nor. ? No. 29 X Ale. £ 45 = Jan. 20, 1913— 

 Three very small young, Nos. 134 £ 135 % and 136 % 



Oct. 30, Nor. ? No. 58 X Ale. $ 6 = Jan. 15, 1913— Two 

 normal young, Nos. 129 130 $. 



Oct. 30, Ale. $ No. 62 X Nor. £ 46 = Jan. 9, 1913— Two 

 small but normal young, Nos. 121 ?, 122 $. 



Oct. 30, Ale. $ No. 59 X Ale. $ 43 = 0.— Only one of the 

 eleven mathifjs that did not take. 



Oct. 30, Ale. $ No. 60 X Nor. <? 44 = Jan. 17, 1913— 

 Two apparently normal young, Nos. 131 cT, 132 



Oct. 31, Nor. ? No. 68 X Nor. $ 69 = Jan. 21, 1913— 

 Three normal young, Nos. 137 <?, 138 139 



Oct. 31, Nor. $ No. 71 X Nor. c? 72 = Jan. 10, 1913— 

 Two small normal young, Nos. 126 c?, 127 £. 



Oct. 31, Nor. ? No. 73 X Nor. ^ 70 = Jan. 19, 1913— 

 One large young, No. 133 ?. 



Oct. 31, Nor. $ No. 74 X Nor. o* 79 = Jan. 11, 1913— 

 One large voung, No. 128 ?. 



Oct. 31, Ale. $ No. 55 X Nor. $ 47 = Jan. 9, 1913— Two 



