210 
A Contribution to the Prohlem of Homotyposis 
mean values for seeds are about the same as those found by English investigators. 
The mean correlation for ovules failing is lower. 
The homotypic correlation for seeds matured per pod is statistically largely 
a resultant of the homotypic correlation for ovules and the "organic" correlation 
for ovules and seeds of the same pod. Thus homotypic correlation for seeds per 
pod does not entirely disappear when correction for rg^g^ and r^s is made by the 
application of partial correlation formulae. There are, therefore, (proximately) 
independent ecological and physiological factors tending to difEerentiate individuals 
with respect to capacity for seed production. 
The general rule for fertility characters in Leguminosae seems to be for the 
maximum value of the homotypic correlation to be that for number of ovules 
per pod, much lower values are found for seeds matured or abortive ovules per 
pod. I believe that the evidence also points in the direction of a lower correlation 
for ovules than for the more truly vegetative characters of the plant. Thus 
Pearson's average values for fg^g^ are far lower than his average for leaves and 
other similar organs. The result given above for length of pod Ti^^ is practically 
•500, and distinctly higher than Tg^g.^ = -352 from the same habitat. 
TABLE I. 
Ovules per Pod. 
2 
3 
4 
5 
6 
7 
Totals 
2 
18 
111 
197 
46 
3 
0 
375 
3 
111 
836 
2382 
942 
239 
15 
4525 
4 
197 
2382 
11770 
8642 
2599 
160 
25750 
5 
46 
942 
8642 
12134 
5613 
598 
27975 
6 
3 
239 
2599 
5613 
3742 
529 
12725 
7 
0 
15 
160 
598 
529 
148 
1450 
Totals 
375 
4525 
25750 
27975 
12725 
1450 
72800 
O 
> 
O 
TABLE 11. 
Ovules per Pod. 
2 
3 
4 
5 
6 
7 
8 
Totals 
2 
98 
1025 
1775 
419 
49 
0 
0 
3366 
3 
1025 
10608 
251^4 
11257 
2300 
111 
5 
50490 
4 
1775 
25184 
101272 
74059 
18242 
1296 
31 
221859 
5 
419 
11257 
74059 
92240 
37849 
4012 
142 
219978 
6 
49 
2300 
18242 
37849 
25458 
3833 
181 
87912 
7 
0 
111 
1296 
4012 
3833 
712 
35 
9999 
8 
0 
5 
31 
142 
181 
35 
2 
396 
Totals 
3366 
50490 
221859 
219978 
87912 
9999 
396 
594000 
o 
P^ 
S-l 
Oh 
f3 
> 
o 
