Vol. IV. Part IV. 
March 1906 
BIOMETEIKA 
A JOURNAL FOE THE STATISTICAL STUDY OF 
BIOLOGICAL PROBLEMS 
EDITED 
IN CONSULTATION WITH FRANCIS GALTON 
BY 
W. F. R. WELDON KARL PEARSON 
AND 
C. B. DAVENPORT 
CAMBRIDGE 
AT THE UNIVERSITY PRESS 
LONDON: CAMBKIDGE UNIVERSITY PRESS WAREHOUSE, FETTER LANE 
(C. F. CLAY, Managee) 
AND H. K. LEWIS, GOWER STREET 
NEW yOBK: THE MACMILLAN COMPANY 
LEIPSIC: BBOCKHAUS 
BQMBAX AND OALCUITA : MACMIIiLAN AND CO., LIMITED 
Entered at the New York Post OfSce as Second Class Matter. 
Price Ten Shillings net. 
[Issued Api-il 11, 1906] 
