

res TEEN EN anni ak 
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SERIES OF INDICES OF WHICH A SINGLE ONE STRONGLY, ETC. (215) 23 
brachycephalic head. Of three daughters who all are brachycephalic 
with mutually little diverging indices two have a large head, the young- 
est has a small one. One son is dolichocephalic and has a still smaller 
head. Other family members are not known. 
Family 179c. The father has a very large head, nearly brachyceph- 
alic, the mother has a small and brachycephalic head. Oftwo brachy- 
cephalic sons one has a very large head, the other a small one. The 
three daughters have all a small head, the second a very small one. 
She is a dementia praecox-patient and had always a feeble constitution; 
in her youth she had convulsions and was always still and retreated. 
The eldest son (1920b, table C, 179a) has 7 brachycephalic children. 
As for the incomplete families the 2nd son of family 16 is very much 
dolichocephalic and has a very large head. His 7 children have indices 
from 79—82.5 (1920b, C 16a). Here are no indications that the father’s 
index is a hereditary variation (1919 p. 352). 
Family 305. The mother has a rather large head and is just brachy- 
cephalic. Three of four daughters are moderately brachycephalic; two 
have a large head. One daughter is dolichocephalic and has an average 
large head. 
Family 333. Two sons and one daughter have the indices 80. A 
2nd daughter has the index 77.5. She is the youngest daughter with 
the smallest head. 
Family 40. The indices of 2 brothers and 4 sisters are 78, 81, 82, 
82, 84, 84. The mother has the index 82. 1 
Family 44a. The variability of three sisters and one brother is 78, 
80, 80, 81. The husband of the sister with the dolichocephalic index 
is brachycephalic (80); there are 3 children with the indices 82, 86 
and 86.5 (1920b A 44). 
From this description we see that different of these cases can be 
non-hereditary variations (f.i. 179c and 16). 
As regards the hereditary character we remark that, having already 
found some indications that the high indices are more or less dominant 
over the low ones, the presence, of a single low index in a series of high 
- ones is explained from the formula DR x DR = DD + 2DR + RR. 
Then of one of four children three have more or less high indices and 
one has a low one. (See also p. 6 and 9). 
b. The deviating index is brachycephalic. 
a. And belongs to a large head. 
