1915] 



on Anti-Typhoid Inoculation 



437 



The most effective way of presenting these facts to the men is 

 to state them in terms of sporting odds, thus : If two men of similar 

 physique and age — one protected and one unprotected — are exposed 

 to similar risks of enteric and one is going to get it, the odds are 

 5 J to 1 that it will be the uninoculated man, while if one of them 

 is bound to die of it, the odds lengthen to 10 J to 1 that it will be 

 the unprotected man. 



That does not state the full value of the comparison, for if the 

 partially protected be excluded altogether the results are even more 

 striking. 



3. Data of the ivhoh British Army in India during ten years. 

 The figures derived from the returns of enteric in the British troops 

 in India from 1903 to 1913 cover a still wider field. The chart 

 is shown in Fis:. 4. 



1894 



TO ^ ^ ^ ^ ^ , 



1903 '03 '04 05 06 07 08 09 10 h 'l2 'l3 14 



22 



20 



18 



16 



14 



12 



10 



8 



6 



4 



2 







Fig. 4.— 



Reduction of Enteric among British Troops in India 



FROM 1903 TO 1913. 



