460 Biometric Workers and Statistical Reviewers 
(d) The memoir frequently referred to in this letter. Not every result found there pointed 
to the existence of selection, but, in my opinion, those which were founded on the best data 
conclusively showed the prevalence of some degree of selection in the mortality of a general 
population. I do not believe that the criticisms brought against that work by the Journal 
reviewer in any way affect the legitimacy of its results. 
I am, Sirs, etc., 
E. C. SNOW. 
January 5th, 1912. 
CAMBRIDGE : PRINTED BY JOHN CLAY, M.A. AT THE UNIVERSITY PRESS 
