Vol. VI. Parts II. and III. 
September 1908 
BIOMETEIKA 
A JOURNAL FOR THE STATISTICAL STUDY OF 
BIOLOGICAL PROBLEMS 
FOUNDED BY 
W. F. R. WELDON, FRANCIS GALTON and KARL PEARSON 
EDITED 
IN CONSULTATION WITH FRANCIS GALTON 
AND IN COLLABORATION WITH j 
C. B. DAVENPORT W. R. MACDONELL 
W.' PALIN ELDERTON RAYMOND PEARL 
BY 
» KARL PEARSON 
CAMBRIDGE 
AT THE UNIVERSITY PRESS 
LONDON: CAMBRIDGE UNIVERSITY PRESS WAREHOUSE, FETTER LANE 
(C. F. CLAY, Managbe) 
AND H. K. LEWIS, GOWER STREET 
NEW tobk: g. p. pdtnam's sons 
LEIPSIO: BBOCKHAUS 
BERLIN : A. ASHEB AND CO. 
BOMBAX AND CALCOTTA : MACMILLAN AND CO., LIMITED 
Entered at the New York Post 0£Qce as Second Class Matter. 
Price Twenty Shillings net. 
[Ittued September 18, 1908] 
