


MICROBRACHYCEPHALY. PREPOTENCE, (229) 37 
the father is. In this case it is remarkable that the mother is very 
much brachycephalic and has a very short head (p. 42). 
Family 28. Both parents have large heads and relatively high indices 
(81 and 83.5). Two children have very large heads and relatively low 
indices. One daughter has a much smaller head and somewhat higher 
index. This case is a special one. 
Family 63a and 76. The mother is macrobrachycephalic. One child 
only. So in these cases there can be segregation according to the form- 
ula DR x RR. 
Family 82c. The father is macrodolichocephalic. Both paternal 
grand-parents are macrobrachycephalic. The four children are doli- 
chocephalic (78.5, 79, 79, 80). In this family there is dominance of the 
low index of the father, whereas both paternal grand-fathers have high 
indices (81 and 86). | 
Family 130. The father is very much brachycephalic, the mother is 
microdolichocephalic. A son has a very large head and a daughter a 
small one; both are dolichocephalic. 
Family 177c. The indices of parents are rather high and do not 
differ very much (81 and 83.5). One child only. 
Family 216c. The father is macrobrachycephalic. The mother is 
macrodolichocephalic and has 7 dolichocephalic brothers and sisters 
(1920b, B 216). Two children only. 
Family 285. The mother is very much macrobrachycephalic. The 
maternal grand-father is macrodolichocephalic, the grand-mother is. 
macrobrachycephalic. The indices of 8 childreh are 76, 77, 78, 78, 78, 
79, 80.5 and 82, those of the parents are 74.5 and 85. So in this family 
the children’s indices are intermediate. 
So there are in our material 3 or 4 cases (82c, 130, 160 and perhaps 
216 and 39) in which the index of a large head is recessive, so in which 
there is reversed dominance (p. 34). 
Of the incomplete families there is in family 252 one child only; in 
the families 213 and 233 there are 2 children only. 
In family 121 with 3 children there can be reversed dominance. 
_ Family 347, too, with 7 dolichocephalic children (73.5, 74, 76, 77, 78, 
78, 78) is an example of recessiveness of the high index of a large head. 
Of the families where the recessive high index belongs to a small 
_ head are clear examples: family 10b with 4 children, family 17c with 
6 children, family 19 with 10 children, family 32c with 5 children, 
