CONTENTS 
(All Mights reserved) 
I. On the Probable Errors of Frequency Constants, Part II. Editobial- . . 1 
II. The Relationship between the Weight of the Seed planted and the Charac- 
teristics of the Plant produced. By J. Arthur Harris. (With Three 
Diagrams in the text) 11 
III. On the Probable Error of a Coefficient of Correlation as found from a Fourfold 
Table. By Karl Pearson . . . . , ' 22 
IV. Multiple Cases of Disease in the same House. By Karl Pearson . . 28 
V. A Study of the Variations in the Female Pelvis, based on observations made 
on 217 specimens of the American Indian Squaw. By Arthur Brewster 
Emmons. (With Plates I — VII and Three Diagrams in the text) . . 34 
VI. The Intensity of Natural Selection in Man. (Second Paper.) By E. C. Snow . 58 
VII. On Errors of Random Sampling in certain cases not suitable for the application 
of a "normal" curve of frequency. By M. Greenwood, Junr. ... 69 
VIII. On the Probable Error of the Correlation Coefficient to a Second Approximation. 
By H. E. Soper. (With Five Diagrams in the text) 91 
IX. On the Measurement of the Influence of "Broad Categories" on Correlation. 
By Karl Pearson. (With One Diagram in the text) 116 
X. Bibliography of Current Literature, Biometry and Eugenics, Nos. 1 — 362 . 140 
XI. On Theories of Association. By Karl Pearson and David Heron. (With 
Twenty -seven Diagrams in the text) . . . ,. . . 159 
Miscellanea : 
(i) The Correction to be made to the Correlation Ratio for Grouping. By 
Student . . . . . . ... . . . 316 
(ii) On the Hereditary Character of General Health. By Karl Pearson and 
Ethel M. Elderton. (With Five Diagrams in the text) . . . 320 
(iii) Note on the Honduras Piebald. By Karl Pearson. (With Plates VIII— XI) 330 
(iv) Selection and Intermediates in Bacillus coli. By Leonard Keene Hirsh- 
bero . . . . . . . . . . . . 331 
Corrigenda . . . • • . . , . . 332 
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