much greater care and cleansing of the teeth, 

 yet the percentage of decay and disease was 

 higher than in the case of men using tobacco. 

 Fullerton says, "The smoking or chewing of 

 tobacco is decidedly germicidal. Chewing, by 

 exercising the teeth, helps nutrition and elimi- 

 nates pathological agencies both by destroying 

 them in situ and by removing them in the ex- 

 pectoration." Rideal (already quoted) men- 

 tions that Dr. Burney, the senior medical officer 

 of Greenwich Hospital, London, asserts that 

 the tobacco smoking inmates of that institution 

 enjoyed comparative immunity from epidemics. 

 From these opinions and examples it seems 

 quite clear that whatever portions of the de- 

 composition products of tobacco reach the 

 mouth and mix with the saliva, or propagate 

 themselves in the immediate surroundings of the 

 smoker, are likely to have extremely good ef- 

 fects. It would be easy to multiply these 

 opinions but there is no use laboring the argu- 

 ment. There is a matter, however, it will do 

 no harm to mention here. Today it is being 

 gradually recognized by the medical profession 

 that the conditions which lead ultimately to gas- 

 tric and intestinal ulcer including appendicitis 

 are entirely due to infection. At the 1912 meet- 

 ing of the British Medical Association this was 

 clearly manifested and some of the leading 



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