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BIOMETRIC DATA IN CRINUM LONGIFOLIUM. 99 
capable of maturing their ovaries into fruits than are the 
smaller ones. 
4. There appears to be a slight negative correlation 
between the number of fruits per inflorescence and the 
number of seeds developing per fruit, 7. e., a decrease in the. 
number of seeds per fruit is associated with the production 
of a number of fruits above the average. This result 
reinforces the conclusions stated under (3). 
5. The intra-inflorescence correlation for number of 
seeds matured is positive if only fertile fruits be included, 
but (apparently) significantly negative, if sterile and fertile 
ovaries are taken at random. Apparently, therefore: (a) 
the inflorescences vary in their capacity for forming seeds, 
so that when one fruit is above the average in seed produc- 
tion, the others of the same inflorescence are also likely to 
be above the average in fertility; (b) the superior fertil- 
ity (seed production) of some fruits is likely to be attained 
at the cost of the complete sterilization of other ovaries. 
6. There is a moderately high correlation between the 
weight of the seeds of a fruit. There is, therefore, some 
complex of factors—innate vigor of ovules, availability of 
plastic materials, etc.,—tending to render the seeds of a fruit 
alike. What these factors and their intensities are, can only 
be ascertained by more detailed analysis of more extensive 
data. 
