Ernest Warren 107 
30 mid-parents. Employing Prof. Karl Pearson's method the accompanying table 
gives the correlation surface. 
Pelorism — Correlation Table — Recessives. Mid-parent and Offspring. 
Offspring. Grade of Pelorism. 
Mid-parents. 
Grade of 
Pelorism 
76°— 100° 
cn 
1° 
to 
CT> 
o 
1 
p 
1— ' 
O 
1 
Totals 
r— 25° 
6 
2 
23 
18 
49 
26°— 50° 
58 
61 
68 
11 
198 
51°— 75° 
64 
31 
15 
110 
76°— 100° 
143 
14 
11 
5 
173 
Totals 
271 
108 
117 
34 
530 
The coefficient of correlation, calculated from the table, between mid-parent 
and offspring is '52. The result can be regarded as only a very rough approxi- 
mation, since a satisfactory method of measuring pelorism has yet to be found. 
The figure obtained is somewhat low, but it would seem to indicate that the in- 
heritance of the degree of pelorism is of the nature of ordinary blended inheritance. 
The point of interest to notice is that the union of two peloric plants of 
different peloric intensities influences the gametes, while the union of a peloric 
plant with a homozygous non-peloric plant does not very readily affect the purity 
of the gametes with respect to pelorism. 
Pelorism. Effect of Selection in a homogeneous race. 
A peloric plant (C) with pelorism of about 85"" intensity was self-fertilised, and 
the offspring, 16 in number, were as follows : 7 with 100 , 4 with 75° and 5 
with 50° of pelorism. 
Parentage 
Crowned Offspring 
■owned 
Parentage 
Crowned Offspring 
3wned 
( Self- fertilisation ) 
100° 
75° 
50° 
25° 
Not cr 
(Self -fertilisation) 
100° 
75° 
50° 
25° 
Not cr( 
C(85°) 
r 
7 
4 
5 
-H 
1 
0 
0 
^C2, 11 (75°) 
6 
13 
5 
0 
0 
C 2 (50°) 
7 
L 
10 
± 
0 
0 
2, 2 (.50°) 
L(7 2, 8 (50°) 
2 
1 
16 
13 
10 
11 
0 
0 
0 
0 
-C 7 (50°) 
17 
11 
18 
2 
1 
i 
0 
C7, 10 (25°) ... 
0 
2 
18 
2 
1 . 
1 
5 
C 7, 10, 20 (25°) 
0 
0 
1 
2 
7 
1 
— C 7, 10, 20, 4 (0°) 
0 
0 
0 
0 
6 
