J. J. Simpson 
243 
Consequently tbe mean and standard deviation for each of the organs and its 
constituents have been calculated and these are given iu the following table : 
TABLE M. 
Means and Standajxl Deviations of the Nmaher uf the Organs and their 
Constituents. 
Organ 
Constituent 
Member 
Mean 
Number 
Standard 
Deviation 
Coefficient 
of 
Variation 
Calyx 
3-9796 
-2553 
6^415 
Outer whorl 
1 -9757 
-1979 
10-020 
Inner whorl 
2-0039 
■1304 
6^507 
Corolla". 
3-9520 
-3523 
8-914 
Androjciiim ... 
5-8092 
-7567 
13^025 
Outer whorl 
1-9570 
-2704 
13^817 
)J 
Stamen 1 
-9840 
•1602 
16^280 
Stamen 2 
-9713 
-1915 
19^715 
1) 
Iimer whorl 
3-8577 
•6588 
17^077 
Stamens 3 . 4 
1 -9950 
-2728 
13-674 
Stamens 5 . 6 
1-8627 
■4863 
26^107 
(1) The most obvious result which is revealed by these constants is the fact 
that in all cases (except the inner whorl of cal\'x) the actual mean of the organs 
is less than the recognised typical number, thus: 
The mean number for the calyx is o-979 instead of 4. 
The mean number for the corolla is 8-952 instead of 4. 
The mean number for the androecium is 5'809 instead of 6. 
(2) The inner whorl of the calyx shows the smallest departure from the 
accepted typical number, namely, 2'{)04 instead of 2. 
Let us, however, test how far the differences in the character of the analogous 
parts are significant by ascertaining the Probable Error of the difference of the 
means of the characters. 
TABLE N (1). 
I. Constituents of the Calyx. 
Constituent 
Mean 
Number 
Standard 
Deviation 
Outer whorl ... 
Inner whorl ... 
1- 9757 
2- 0039 
•1979 
-1304 
The difference here is D='02Hlo and the probable error of the difference 
Ej) = -0037 ; thus the value = 7-6. The differeuce is therefore clearly 
m J) 
significant. 
