HOMOTYrOSiS lY' THE VEGETABLE KINGDOM. ;315 
Individual and Kacial Variability. 
Series. 
Stigmatic bands. 
Coefficient of 
S. D. 
Percentage 
variability. 
Mean. 
S. D. 
variation. 
of array. 
JJ'ild Poppij. 
(i.) from pairs. 
10-0443 
1-7704 
17-6259 
1-4644 
82-71 
1 ,, ,, capsules. 
9-9318 
1-7684 
17-8052 
— 
-- 
' (ii.) from pairs. 
9 - 90.5.5 
1-.5087 
15-2309 
1-3829 
91-66 
; ,, ,, capsules. 
9-8288 
1-5007 
15-2677 
— 
— 
,, pairs without repetition of 
capsules. 
9-8444 
1-4878 
15-1132 
1-3322 
89-54 
(iii.) from pairs. 
8-7733 
1-4553 
16-5878 
1-2311 
84-59 
,, ,, capsules. 
8-7236 
1 - 5402 
17 - 6556 
— 
— 
Mean from pairs .... 
9-5744 
1-5781 
16-4809 
1-3661 
86 - 32 
Mean from capsules. 
9-4947 
1-6031 
16-9095 
— 
— 
Shirley Poppy. 
(iv.) from pairs. 
12-3679 
1-6803 
13-5860 
1-3251 
78-86 
,, ,, capsules. 
12-3873 
1-7326 
13-9869 
— 
— 
(v.) from pairs. 
12-6103 
1-8853 
14-9.505 
1-6060 
85 -18 
„ ,, capsules. 
12-5091 
1-8977 
15-1705 
: Mean from pairs .... 
12-4891 
1-7828 
14-2682 
1 - 4655 
82-02 
1 Mean from capsules. 
12-4482 
1-8151 
14-5787 
— 
— 
Total mean from pairs . 
_ 
_ 
15-5962 
1-4019 
84-60 
Total mean from capsules . 
— 
15-9772 
— 
— 
But we might well have expected a good deal more evidence of this. The 
differences of the means calculated from caj^sules and pairs is not very great, and 
in two out of three series of the wild jjoppies the variability as deduced from pairs is 
very slightly greater than (sensibly equal to) that deduced from capsules. The mean 
values of the coefficient of variation, as calculated from pairs and from capsules, 
are in close agreement. The only sensible deviation is that of the Quantocks 
series, and this arises from the large difference in the standard deviations of the 
two methods. The work has been carefully revised, but no error discovered. 
Generally for the coefficient of 
variation we have— 
Ash. 
17'56 
Wild poppy. 
. 16-01 
Spanish chestnut .... 
15-05 
Shirley poppy .... 
. 14-58 
Beech. 
10-77 
Mean . 
. 15-08 
Holly. 
'Z'6‘'6b 
Mean . . ]6’G7 
2 s 2 
