

MICROBRACHYCEPHALY. PREPOTENCE. (231) 39 
are 66 sons and 76 daughters, together 142 children from parents who 
are both macrobrachycephalic. Where a single time it was doubtful 
wether a family should belong to a special group we have for each 
group made a 2nd counting of the families with some omissions. 
These second groups do not differ importantly with the first (see the 
tables). | 
From the comparison of the results of the tables XII and XIII we 
see that of the brachycephalic parents for all sons M + ¢ = 81.61 + 
(3.29 + .11) and of the dolichocephalic parents M + 5 = 78.64 + 
(3.08 + .14) (after correction these numbers are respectively 82.15 + 
3.14 and 78.37 + 2.99). For all daughters we find for table XII 
.M + o = 82.45 + (2.975 + .094) (after correction 82, 63 + 2.86) and 
for table XIII M + ¢ = 79.45 + (2.31 + .11) (after correction 79.11 
+ 2.20). So the variability of indices of children of brachycephalic parents 
is larger than that of children of dolichocephalic parents. 
In order to be sure that this difference is not a/ result of a larger 
variability of the brachycephalic parents than of the dolichocephalic 
ones, we have also appointed the latter. In our material brachycephalic 
parents have the indices 80—89, dolichocephalic parents 80—66 (80— 
72). For 214 brachycephalic parents we find M + 5 = 82, 82 + 1.83 
and for 158 dolichocephalic parents M + ¢ = 77.72 + 1.9. So the 
variability of the parents is the same. 
Of 142 children of macrobrachycephalic parents M + 5 is 82.03 + 
3.26. Of 183 children of parents who are macro- and microbrachyceph- 
alic (and reciprocally) M + ¢ is 82.2 + 3.2. 
Of 110 children of macrodolichocephalic parents M + 5 is 78.63 + 
2.84 and of 79 children of microdolichocephalic parents M + ¢ is 
78.87 + 2.38. Of 96 children of parents who are macro- and micro- 
brachycephalic (and reciprocally) M + 5 = 79.3 + #53. It does not 
wonder, that in these small numbers the influence of the microbrachy- 
cephalic index rests covered. 
__ Finally it is still important to retrace from the tables VII and VIII 
which is the heriditary constitution of the parents derived from that of 
the grand-parents (p. 18). Through want of data ‚here, just as tor 
the tables II and III there are but few families which come into consider- 
ation for this investigation. We called dominance the phenomenon 
that when, with great difference of the indices of parents, those of 
children follow the index of one of the parents. So that parent is then 
