IO4 



C. M. CHILD. 



case. Commonly section after section may be examined without 

 seeing a case of mitosis or occasionally one or two may be 

 found. In the ovary shown in Fig. 8, A, however, several con- 

 secutive sections showed frequent mitoses particularly in one 

 region of the ovary. Amitosis was common everywhere as 



FIG. 8, A, 8, B. 



usual. Discussion as to possible determining conditions is post- 

 poned for the present. Fig. 8, B, is a case of mitosis in which 

 twelve chromosomes were clearly visible probably not the 

 whole number. It was usually impossible to determine with 

 accuracy the number of chromosomes in these divisions. 



Fig. g, A, is also taken from the same stage and across the 

 whole width of the ovary near its base. At least four perfectly 

 clear cases of amitosis (a, b, c, d] are present besides two other 



