Ernest Warren 317 
Mid-Parent and BR Offspring {inclnding self-fertilized Families). 
Mid-parent, 
general 
colouration 
15—19 
20—24 
25—29 
30—34 
35—39 
40—44 
45—49 
50—54 
55—59 
60—64 
65—69 
70—74 
75—79 
^ P 
S 60,2 
O o 
9 I 9 11 
T 'T 
10 6 
1 0 
4 4 
2 ! 1 
1 \ 0 
12 
Totals 
12 
0 
0 
4 
21 
0 
0 
14 
7 
9 
0 
15 
10 
92 
The general results may be summarized as follows: 
Relationship 
Mid-parent colour and colour of DR offspring 
(including self-fertilized families) 
Mid-parent colour and colour of DR offspring 
(excluding self-fertilized families) 
Male parent (RD) colour and colour of DR off- 
spring (including self -fertilized famiUes) 
Female parent (DR) colour and colour of DR 
offspring (including self-fertiKzed families) 
No. of 
mid- 
parents 
or parents 
No. of 
DR 
off- 
spring 
Standard 
deviation 
of parents 
Standard 
deviation 
of DR 
offspring 
Co- 
efficient 
of corre- 
lation 
17 
92 
19-280 
17-520 
-675 
15 
74 
18-514 
17-800 
-587 
8 
44 
17-249 
18-336 
•471 
12 
7G 
19-351 
16-563 
•415 
We see from the above that the strength of inheritance, with respect to the 
intensity of colouration, between individuals of similar gametic constitution 
follows a similar statistical law to that exhibited by characters where discontinuity 
cannot be detected, where complete blending occurs and no trace of segregation 
can be found. 
It might have been anticipated by some that the varying intensities of the 
general colouration among individuals of similar gametic constitution were casual, 
fluctuating variations which could not be inherited. The above results point to 
the view that small variations of this nature are inheritable, and consequently 
they can be of importance in the evolution of species. 
