522 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



It is evident from figure 24 that the differences between ranks are not large and also 

 that there is not a consistent trend from lower to higher ranks. The slight inferiority of first 

 lieutenants to second lieutenants attracts attention, though this is reduced by the dropping 



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Fig. 24. Comparison of officers by ranks, showing percentages in each letter grade. Second lieutenants, 2,181; first lieutenants (including 

 medical), 1, 640; first lieutenants (not medical), l,0SO; captains, 9S9; majors, 121; higher than major, 7S. 



out of medical first lieutenants. The main other point of interest in this rough comparison is 

 the fact that the superiority of the ranks of major and "higher" is evident chiefly in their pro- 

 portion of distinctly superior men (A grade) and their lack of extremely inferior men. 



