Vol. VII. Part IV. 
November 1910 
BIOMETEIKA 
A JOUKNAL FOR THE STATISTICAL STUDY OF 
BIOLOGICAL PROBLEMS 
FOUNDED BY 
W. F. R. WELDON, FRANCIS GALTON and KARL PEARSON 
EDITED 
IN CONSULTATION WITH SIR FRANCIS GALTON 
BY 
KARL PEARSON 
CAMBRIDGE 
AT THE UNIVERSITY PRESS 
LONDON: FETTER LANE, E.G. 
(C. F. CLAY, Manager) 
AND H. K. LEWIS, GOWEE STREET 
EDINBURGH: 100, PRINCES STREET 
HEW YORK: G. P. PUTNAM'S SONS 
BERLIN: A. ASHER AND CO. 
liEIPBIO: BB0CKHAU8 
BOMBAY AND CALCUTTA: MAOMILLAN AND CO., LIMITED 
Entered at the New York Post Office as Second Class Matter 
Price Ten Shillings net. 
[I»»««d November 15, 1910] 
