BIOMETRIKA 
JOUENAL FOR THE STATISTICAL STUDY OF 
BIOLOGICAL PROBLEMS 
F. R. WELDON, FRANCIS GALTON and KARL PEARSON 
KARL PEARSON 
VOLUME X 
April 1914 to May 1915 
CAMBRIDGE 
AT THE UNIVERSITY PRESS 
LONDON: FETTER LANE, E.G. 
(C. F. CLAY, Managek) 
AND H. K. LEWIS, GOWER STREET 
WILLIAM WESLEY AND SON, 28, ESSEX STREKT, STRAND 
EDINBURGH : 100, PRINCES STREET 
CHICAGO : UNIVEliSITY OF CHICAGO PRESS 
BOMBAY, CALCUTTA AND MADRAS : MACMILLAN AND CO., LIMITED 
TOBONTO : J. M. DENT AND SONS, LIMITED 
TOKYO : THE MARUZEN-KABUSHIKI-KAISHA 
FOUNDED BY 
EDITED BY 
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