CONTENTS 
{All Rights reserved) 
PAOE 
I. Tables for Facilitatiug the Computation of Probable Errors, By 
Winifred Gibson, B.Sc. 385 
II. Cooperative Investigations on Plants. — III. On Inheritance. in the 
Shirley Poppy. Second Memoir, (With Colour Photographic 
Plate of Petals)- . .394. 
III. On the Inheritance of Coat-Colour in Cattle. Part I. Shorthorn 
Crosses and Pure Shorthorns, By A. Barrington and K. Pear- 
son, F.RS, 427 
IV. Hereditary Deafness. A Discussion of the Data collected by Dr E. 
A. Fay in America. (With one Diagram in the text.) By Edgar 
Schuster, M,A 465 
V. On the Correlation between Vaccination and Smallpox in the London 
Epidemic 1901-2. (With two Figures in the text.) By F. M. 
Turner, M.D, . . . . . . • • . . 483 
Miscellanea, (i) On the Distribution of the Severity of Attack in Cases 
of Smallpox. (With one Diagram in the text.) By 
' K. Pearson, F.R.S. . ... . . . . 505 
(ii) On" the Mean Duration of Life of Individuals Dying 
within a Year after Birth. By Raymond Pearl, Ph.D. 510 
Biometrika will appear about four times a year. A volume containing 
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It is very desirable that a copy of all measurements made, not necessarily 
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