10 (202) SURPASSING UPWARD AND DOWNWARD OF THE INDICES 
and III, then there must be among the children more than once, but 
less than twice as many heterozygotes as homozygotes. 
TABLE Ila. 
GROUPING OF THE CHILDREN INTO A GROUP OF LOW INDICES AND INTO 
A GROUP OF DIFFERENT HIGH INDICES. 







Number of 
children of which; Number of 
Average index | the index agrees | children with Drobor ton Nas 
of the parents. | with the lowest | different high P l'an 
index of the index. 3 
> “ parents. 
76 —78 10(9) 32 as 12 
78 —79 10(10) 39 1924 12 
79 —79.8 7(9) 56 le 12 
79.8—80.7 6(7) 23 1 : 4(3.5) 12 
80.9—82.4 | 11(12) 41 1 : 4(3.5) 12% 
82 —84.6 6(7) 32 | 15.9 R 10 
_ Total | 50(54) | 243 | 1: 5(4.5) | 70 
TABLE IIIa. 
GROUPING OF THE CHILDREN INTO A GROUP OF HIGH INDICES AND INTO 
A GROUP OF DIFFERENT LOW INDICES. 









Number of 
: children of which} Number of Nun 
Average index | theindex agrees | children with P ti x = 
of the parents. | with the highest | different low | "°POTUON. f a: 
index of the index. u 
parents. 
| 
74.6—79.2 10(12) 29 142% 12 
79.3—80.5 15(13) 41 154 13 
80,8—82.6 15 31 12 12 
82.9—86.6 il 33 ES 2 
Total 47 130 14,278 46 

The tables Ila and IIIa give the result of the grouping. The parents 

