36 (228) DOMINANCE. REVERSED DOMINANCE RECESSIVENESS OF 
mother, but it may also be the case that the high index of the paternal 
grand-mother has expressed itself. 
Family 271c. The father, too, has a small head. Both maternal 
grand-parents are brachycephalic (80.5) and have small heads. Three 
children are brachycephalic 82—85). 
Family 337. The mother has a small head with the aen 81. The 
father has a very large head. One child. 
Family 347a. The mother has a small head which is nearly brachy- 
cephalic (79.5). Both maternal grand-parents respectively have a 
small head and an average large one with the indices 78.5 and 81. The 
father is very much macrodolichocephalic. Seven brothers and sisters 
of the father’s are all dolichocephalic, the paternal grand-father is 
macrobrachycephalic. The indices of 8 children are 80, 80, 80, 80, 81, 
81, 82, 83.5. This case is an indistinct one. The high index of the chil- 
dren is, as it seems, due to the mother. 
From the data of these 13 families it is obvious that in the families 
3b, 3m, 64, 66, 109, 216c; 239 and 347a,i. e. in 8 families there is domin- 
ance with prepotence of the high index belonging to a small head. 
As already said, in 30 cases the high index belongs to a large head. 
As regards the sex, in 31 families the high index is that of the mother 
and in 12 cases that of the father. 
Of the 7 incomplete families the low index is six times that of the 
mother. So totally 32 times the high index is that of the mother and 18 
times that of the father. The prepotence (or valenz) of the high index 
of the wife is consequently larger than that of the husband. 
When the high index is recessive, it often belongs, as we already 
said, to a small head. In table VIII we find that the father’s head is 
small in 6 cases (10b, 32c, 173a, 179e, 256a, 269b) and the mother’s 
in 5 cases (17c, 19, 73b, 88a, 356c), together 11 cases. In 5 cases the 
father’s head as well as the mother’s is large, together 11 cases (28, 
130, 160, 177c, 216c; and 39, 63a, 76, 82a, 82c, 285). Of the incomplete 
families twice the mother has a small head, three times the father has 
a large head and twice the mother has. 
The cases in which the recessive index belongs to a large head 
are: ; 
Family 3q. The father and both paternal grand-parents are micro- 
dolichocephalic. The mother and both maternal grand-parents are 
macrobrachycephalic. Two children only. They are dolichocephalic as 

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