Vol. XI. Part III May, 1916 
JUL' 8 1916 
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, Manager 
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\l»mtd, June 12, 1916] 
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