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THE NEW WORLD OF SCIENCE 



army on each of the following points: (i) The death rale 

 in the group from 20 to 29 years of age is lower than that of 

 the draft age from 21 to 31 years. (2) The death rate in these 

 ages is greater among males than among females. (3) The 

 army includes more men above 31 than below 21. (4) The 

 population 'of cities is as a rule overestimated and a slight over- 

 estimate in the population lowers the estimated death rate 

 markedly. 



With these explanations a comparison of the army death rate 

 with the rates in certain cities, expressed as annual rates, is 

 given for this period in Table i. 



TABLE i 



Annual Death Rate per 1000. (Age 20 to 29 Yrs., Time, Oct., Nov., 

 Dec., 1917; Jan., Feb., Mar., 1918.) 



Place 



Death Rate 



Army 



New York City. 



St. Louis . . 



New Orleans . . 



Pittsburgh 



Chicago 



9-1 

 5-5 

 5-5 

 10.4 

 6.2 

 5-2 



It is seen that the average death rate in the camps is higher 

 than that of any city with the exception of New Orleans. 



As is true of cities the death rate varied widely in different 

 camps, as is shown in Table 2. 



TABLE 2 

 Annual Death Rate per 1000 



