152 
Variation and Inheritance in Aphis 
TABLE XVI. 
Pairs of Brethren. 
Frontal Breadth, 2nd generation (60 families, 368 individuals). 
The 2nd Individual taken. 
03 
1 
<^i 
'h 
>-( 
1 
1 
•I 
03 
1 
'-I 
C3 
c'o 
1 
93 
1 
01 
00 
"—I 
1 
c 
C3 
61 
»-l 
1 
61 
Number of 
individuals 
involved 
12-0— 12-9 
4 
1 
5 
13-0— lS-9 
26 
21 
8 
1 
1 
57 
14-0— 14-9 
4 
21 
114 
101 
20 
10 
270 
15-0— 15-9 
1 
8 
101 
210 
149 
56 
6 
1 
532 
10-0— 16-9 
1 
20 
149 
160 
146 
31 
8 
515 
17-0— 17-9 
1 
10 
56 
146 
266 
98 
20 
597 
18-0— 18-9 
6 
31 
98 
50 
17 
202 
19-0— 19-9 
1 
8 
20 
17 
4 
50 
Totals 
5 
57 
270 
532 
515 
597 
202 
50 
2228 
TABLE XVIL 
Pairs of Grandchildren. 
Frontal Breadth, 3rd generation (30 sets of families, 291 individuals). 
The 2nd Individual taken. 
0 . 
CM 
3 O 
13 
a 
> ^ 
.1-. a> 
^ a 
C3 
03 
03 
03 
C3 
•<^ 
!^ 
Number of 
1 
1 
1 
1 
individuals 
■b 
»h 
i) 
involved 
'-^ 
13-0— 13-9 
8 
39 
23 
9 
79 
14-0— 14-9 
39 
440 
387 
112 
9 
987 
15-0— 15-9 
23 
387 
612 
417 
39 
1478 
16-0— 16-9 
9 
112 
417 
518 
66 
1122 
17-0— 17-9 
9 
39 
66 
8 
122 
Totals 
79 
987 
1478 
1122 
122 
3788 
