


a 
OF PARENTS BY THOSE OF THE INDICES. (211). 19 
publications) that gametes change when passing during some gener- 
ations which are constituted in the same way. 
In family 269b both maternal grand-parents have a low index; of 
both paternal grand-parents the grand-father has a low index, the 
grandmother a very high one. In this case the indices of the grand- 
parents do not give an indication for the high indices of children. One 
brother and three sisters of the mother’s alltogether have indices that 
agree with the latter’s. 
In family 240d of both paternal grand-parents the grand-father has, 
a high index. The indices of the children are divided into 2 groups 
79-80 and 83-86. In this case prepotence need not to be accepted. 
One sister of the father’s has the same index as himself, whereas two 
other sisters have higher indices 81 and 82 (1920). 
In family 366a both paternal grand-fathers have a lower index than 
the father 79.5 and 79. Three sisters, too, have a lower index (1920b, 
A 366b, also table E 366). 
In family 239 the paternal grand-father has a high index. 
In family 34a 2 brothers and 3 sisters respectively have the indices, 
80 and 82, 80, 83 and 86( 1920b, table B 34f). Here the father might 
therefore be a minus-variation of a higher hereditary variation and 
then as a dominant heterozygote he might give segregation according 
to the scheme for this table (DR x RR). 
Family 152a. From his first marriage the father has 2 daughters 
(1920b, table B 152) with the same index as himself (1920b, table B, 152). 
© Two brothers of the mother’s have the indices 80 and 77 and the 
maternal grand-mother has the index 78. In this case we must accept. 
a special prepotence of the mother’s index. - 
In family 179a the paternal grand-parents have the indices 80 and 
82, the maternal grand-father has the index 84. So, for the grand- 
parents, there is some indication for the appearance of the high indices 
in the sense that the parents can have special formulae of factors. Yet 
it remains remarkable that 4 children have indices which are consider- 
ably higher than those of parents and of the three known grand- 
parents. 
Family 36b. Two sisters and two brothers of the father’s have the 
indices 80, 81.5, 77 and 78. Here, too, the mother’s index seems to be 
prepotent. — 
The families 3c, 3e, 3f, 3g. The original family of 8 brothers and 
