ON THE SELECTIVE ELIMINATION OCCURIIING DURING 
THE DEVELOPMENT OF THE FRUITS OF STAPHYLEA. 
By J. ARTHUR HARRIS, Ph.D., Carnegie Institution of Washington. 
CONTENTS. 
Page 
I. Introduction 453 
II. Material 454 
III. Statement of Problems and Methods of Investigation 458 
IV. Discussion of Problems on the Basis of Actual Data fc*f 1908 .... 459 
Problem 1. Is there a difference in the mean number of ovules per locule, or 
per fruit, in the ovaries which are eliminated and those which develop to 
maturity ? 459 
Problem 2. Is there a difference in the variabiUty in number of ovules per locule 
and per fruit in the eliminated ovaries and those which develop into mature 
fruits ? 468 
Standard Deviations 470 
Coefficients of Variation 473 
Problem 3. Is there a difference in the radial asymmetry (as indicated by the 
number of ovules per locule) in the eliminated ovaries and those which 
develop to maturity ? 476 
Problem 4. Is there a difference in the relative number of locules with "odd" 
numbers of ovules in the eliminated ovaries and tliose which develop to 
maturity ? 483 
Problem 5. Is there a difference in the percentage of 2- and 4-merous ovaries 
among the eliminated ovaries and those which develop to maturity \ . . 486 
V. Discussion of Problems on the Basis of the Actual Data for 1906 . . . 487 
VI. Interrelationship of Characters Considered 491 
1. The correlation between the coefficient of asymmetry and the number of 
"odd" locules per ovary 491 
2. The correlation between the coefficient of asymmetry and the number of ovules 
per locule 493 
3. The correlation between the number of " odd " locules per ovary and the 
number of ovules per locule 494 
VII. Recapitulation 494 
VIII. Appendix of Tables of Data ... 495 
