HOMOTYPOSIS IN THE VEGETABLE KINGDO.AI. 
371 
of variation and of homotyposis. But it is really not so, for if we proceed as on that 
page to divide up our series into two groups in order of their variability, we find that 
the first eight give an average coefficient of variation of 22'68, and have an average 
hoinotyjDic correlation of •1941; the last eight have an average coefficient of variation 
of 51'47—double and more that of the first eight—while their hoinotypic correlation 
is •2207. Thus, so far from the homotyposis being reduced by greater variability, it 
actually appears to be slightly increased. 
Table LIT—Relationship between the Number of Ovules and those of Ptipe and 
of Aborted Seeds. 
Species. 
Correlation. 
Ripe and aborted. 
Ripe and ovules. 
Aborted and ovules. 
Lathyrus Odoratus (i.). . . 
- -7692 
• 4581 
•2155 
„ „ (ii-) • • 
- -8290 
•3628 
•2203 
Lathyrus Sylvestris .... 
- -8797 
•0992 
•3660 
Vida Uirsuta . 
- -2859 
•6195 
•5751 
Means . . . 
- ■ 6909.5 
•3849 
•3442 
Lastly, we may notice (Table LI.) that the variation in the individual amounts 
to upwards of 97 per cent, of that in the race, or we have another strong fact to aid 
in demolishing the theory that variability is a result of sexual reproduction. Note 
in particular the 97 per cent, in the case of the ovules whose numher is determined 
before fertilisation 1 
Tables XXXV.-XLIX. give the data from which the constants of Tables L.-LII. 
have been calculated. 
3 B 2 
