Vol. X. Part I. 
April, 1914 
BIOMETEIKA 
A JOURNAL FOR THE STATISTICAL STUDY OF 
BIOLOGICAL PROBLEMS 
FOUNDED BY 
W. F. R. WELDON, FRANCIS GALTON and KARL PEARSON 
EDITED BY 
KARL PEARSON 
CAMBRIDGE UNIVERSITY PRESS 
C. F. CLAY, Makager 
LONDON: FETTER LANE, E.G. 
EDINBURGH : 100, PRINCES BTEEBT 
also 
a. K. LEWIS, 136, GOWER STREET, LONDON, W.C. 
WILLIAM WESLEY AND SON, 28, ESSEX STREET, LONDON, W.C. i 
CHICAGO : UNIVERSITY OF CHICAGO PRESS 
BERLIN : A. A8HER AND CO. 
LEIPSIC : BROCKHAUS 
BOMBAY AND CALCUTTA: MACMILLAN AND CO., LIMITED 
TORONTO : J. M. DENT AND SONS, LIMITED 
TOKYO : THE MARUZEN-KABUSHIKI-KAISHA 
^1 Mm' 
Price Ten Shillings net. 
[Iseued April SO, 1914] 
