462 
Selective Eliiiiination in Stapliylea 
If there be no selective elimination whatever, the means calculated from the 
three collections should be sensibly identical — that is to say, identical except for 
the differences due to the errors of random sampling. If our series of shrubs were 
very large we should expect half of the differences between the values of any 
two constants to be negative and half to be positive, if these differences were due 
merely to chance differences in the gathering of the fruits composing the samples, 
just as we would expect 50 per cent, heads and 50 per cent, tails in tossing a coin 
a few hundred times. We have only 28 throws of our coin, to use our figure, and 
so we cannot expect to get exactly 14 of each sign, but we ought not to get very 
wide divergences from these numbers unless there is some biological factor at work 
to modify the proportions. 
That there must be some such factor is quite evident from a casual examina- 
tion of the tables. Taking first the differences between the eliminated ovaries and 
those which are continuing their development, we find that the mean number of 
TABLE III. 
Physical Constants for Series C. 
Ovules pee Locule 
Ovules peb Ovary 
Number 
of 
Shrub 
Average 
Standard 
Coefficient 
Standard 
CoefiScient 
and 
Deviation and 
of 
Deviation and 
of 
Probable 
Error 
Probable Error 
Variation 
Probable Error 
Variati 
an 
11 
8-360 + 
-030 
■760+ -021 
9-09+ -25 
1 
-804+ -086 
7-19± 
•34 
12 
7-480 + 
-031 
•793+ -022 
10-61 ± -28 
1 
657 + -079 
7-38 + 
•35 
13 
6-757 + 
-036 
■915+ -025 
13-54+ -38 
1 
891 + -090 
9-33± 
•45 
U 
6-588 + 
-035 
•746+ -025 
11-32+ -38 
1 
664+ -096 
8-42 + 
•49 
15 
8-713 + 
•032 
■836+ -023 
9-59+ -27 
1 
980+ -094 
7-57 + 
•36 
IG 
8-190 + 
•033 
•860 +^024 
10^51 + ^29 
2 
127±-101 
8-66 + 
•42 
17 
8-730 + 
•041 
r051 + ^029 
12^03+ -34 
2 
671 + -127 
10-20 + 
•49 
18 
7-587 + 
•029 
■754f021 
9^94+ -28 
1 
861 + -089 
8-18 + 
•39 
19 
7-850 + 
•027 
■689+ ■oig 
8^77 + -24 
1 
639+ -078 
6-96 + 
•33 
20 
7-643 + 
•028 
•709 ±^019 
9^28+ ^26 
1 
■538 + -073 
6-71 + 
-32 
21 
8-067 + 
•025 
■654 +^018 
8-11+ ^22 
1 
•544+ -074 
6-38 + 
-31 
22 
7-903 + 
•020 
■511 + ^014 
6^47+^18 
1 
151 + -055 
4-86± 
-23 
23 
6-261 + 
•039 
■777 ±^028 
12^41+ -45 
1 
•644+ -101 
8-75 + 
•54 
2Jp 
7-537 + 
•028 
•713 +^020 
9-46± -26 
1 
-378 + -066 
6-09 + 
•29 
25 
9-597 + 
•077 
r990+^055 
20-74+ -59 
1 
•930+ -092 
6^70 + 
•32 
7-618 + 
•030 
■668 + ^021 
8-77+ -28 
1 
•429+^078 
6^25 + 
•34 
27 
8-103 + 
•027 
■688+ ^019 
8-49+ -24 
1 
•347 +^064 
5^54 + 
•26 
29 
6-917 + 
•031 
•802+ -022 
11-59+ -32 
1 
•763+ -084 
8-49± 
•41 
30 
6-387 + 
•026 
•666 ±-018 
10-43+ ^29 
1 
•294 +^062 
6-75 + 
■32 
81 
7-463 + 
■029 
-750+ -021 
10^05 ± ^28 
1 
•679+ -080 
7-50 + 
•36 
32 
7-810 + 
■026 
•664 +^018 
8-50+ -24 
1 
•471 + -070 
6^28 + 
•30 
33 
6-833 + 
■030 
•783+^022 
11 -45 ±-32 
1 
775+ -085 
8 •66 + 
•42 
31^ 
7-647 + 
■029 
•740+ -020 
9^68+ ^27 
1 
541 + -073 
6^72 + 
•32 
35 
7-8.30 + 
•022 
•578+ -016 
7^38+ ^20 
1 
127 ± -054 
4^80 + 
•23 
8-533 + 
•040 
1-021 ±-028 
ir97+ •ss 
2 
112+ -101 
8-25 + 
■40 
38 
7-003 + 
035 
-908+ -025 
12^96+ -36 
2 
343+ -112 
1M5 + 
•53 
39 
8-290 + 
•029 
-743+ -020 
8^97± ^25 
1 
540 ±-073 
6-19 + 
•30 
ko 
8-233 + 
028 
•721 + ^020 
8-75 ± -24 
1 
546 ± -074 
6-26 + 
•.30 
