# 
THE VERY HIGH AND VERY LOW INDICES. (249) 57 
successive greatness of the average index of parents, it appears that in 
general according to the increasing of the indices of parents the number 
of children with a high index is also larger. This not being available for 
each special case is just a proof that independent segregation occurs. 
We composed the following list (table c). 
Of each family the number of children with an index 85 and higher 
is indicated and so the total number of children is. All families of which 
the sum of the indices of parents does not differ more than one unity 
have been joined. From the figures of the number with a high index 








TABLE C. 
En rs Ÿ wo © Sy Ce De a 
pepe EA sos toe | ys. EE 
688 | 2358| ae PN yo she ee 
gags lea. 43 à Be maals See) was à 
san | fame] So 2 Ban EE oe |S 2 
nT Zi aa = ° a Mi 2 aa 2 5 à 
169 28 46 .609 161 16 50 .320 
167 6 14 428 160 10 33 .303 
166 5 14 357 159 5 22 227 
165 14 35 4 158 10 41 244 
164 29 60 438 157 6 16 375 
163 11 28 393 155 2 8 „250 
162 12 19 632 153 2 6 13353 

and the total number of children the proportion has been calculated. In 
such a table the small families have an unfavourabl einfluence. (WEIN- 
BERG.) 
Still in another way we have examined the presence of the high indi- 
ces in table X. When the indices of parents differ relatively little and 
are low there will be few children with high indices (DR x DR = 
DD + 2 DR + RR, p. 29, 30). When of one of the parents the index is 
high, there will be more children with a high index (DR x RR = 
DD + DR, also DD x RR = DR) and most children with high 
indices will occur, when both parents have a high index (DD x 
DD = DD; also DD x DR = DD + DR). According to these points 
of view we have classified the material of table X into 3 groups. In the 
first group we find for 139 cases 43 high indices, i. e. a proportion of 
