244 CJontrihutlon to a Statistical Stiidij of the Crtidferm 
It is worthy of notice that the outer whorl of the calyx is more variable than 
the inner whorl and that it possesses on an average fewer sepals. 
TABLE N(2). 
II. Members of the Outer Whorl of the 
Androecium. 
Member 
Mean 
Number 
Standard 
Deviation 
Position 1 
Position 2 
•9840 
•9713 
•1602 
•1915 
The difference here is Z)= 01268 and Er. = •00391 ; the value ^ — = 3 2. 
^ m 
Thus when the two positions of the outer whorl of the androecium are taken 
into consideration, a probably significant difference is found between the means of 
the distribution of the parts of this whorl. Now in position number 1 there is 
a greater approach to the accepted type owing to the fact that when the com- 
ponent of one of the positions of the outer whorl was found to depart from the 
accepted type, the other position was selected as the starting point for the 
orientation of the flower and was called position number 1. It is all the more 
noteworthy that the deviation for position 2 is not in the direction of greater but 
of lesser frequency and the variability of position 2 is greater. We have thus 
again a reduction in the value of the type with greater variability. 
TABLE N(3). 
III. Members of the Inner Whorl of the 
Androecium. 
Member 
Mean 
Number 
Standard 
Deviation 
Position 3.4 ... 
Position 5.6 ... 
1 -9950 
1 ^8627 
•2728 
•4863 
Here the ratio =r^^ ^ is nearly 15 and therefore there is quite a significant 
difference between the means of the distributions of the two members of the inner 
whorl of the androecium. In both cases the tendency is towards a suppression of 
functioning stamens rather than an increase, together with greater variability 
in the case where the reduction from the accepted type is more marked. 
This difference in variability is, in the main, real and is not due to the arbitrary 
selection of the 3.4 position. This will be evident from a study of Table XIX. 
It will there be seen that there were 1754< cases where two stamens occurred in 
