5^ 
CONTENTS OF VOL. VII. 
Memoirs. 
PAGE 
I. Canary Breeding. A Partial Analysis of Records from 1891 — 1909. 
By A. Rudolf Galloway 1 
II. Tables of the T-Function. Arranged by J. H. Duffell . . 43 
III. A Second Cooperative Study of Vesjja vulgaris. Comparison of 
Queens of a Single Nest and Queens of a General Population. 
By E. Y. Thomson, Julia Bell, and Karl Pearson . . 48 
IV. The Opsonic Index — A Medico-Statistical Enquiry. By W. F. 
Harvey and Anderson McKendrick 64 
V. On a New Method of Determining Correlation between a measured 
Character A and a Character R of which only the Percentage of 
cases wherein B exceeds (or faiio onort of) a given Intensity is 
recorded for each grade of A. By Karl Pearson ... 96 
VI. On Inheritance in the Production of Butter Fat. By H. L. Rietz 106 
VII. Tables to facilitate the Computation of the Probable Errors of the 
Chief Constants of Skew Frequency Distributions. By A. Rhind 127 
VIII. On the Relation between the Symmetry of the Egg, the Symmetry 
of Segmentation, and the Symmetry of the Embryo in the Frog. 
By J. W. Jenkinson 148 
IX. Histological Examination of a Case of Albinism. By J. E. Adler 
and J. McIntosh 237 
X. Note on Internal Albinism. By Karl Pearson .... 244 
XI. On a New Method of Determining Con-elation, when one Variable 
is given by Alternative and the other by Multiple Categories. By 
Karl Pearson 248 
XII. On the Effect of a Differential Fertility on Degeneracy. By Karl 
Pearson 258 
