strength, and if it is not used to excess, then 
there are no scientific proofs that it has any 
injurious effects, if there is no idiosyncracy 
against it. . . . . Speaking generally, it 
exercises a soothing influence when the nervous 
system is in any way irritable. It tends to calm 
and continuous thinking and in many men pro- 
motes the digestion of food. 
“Tobacco, properly used may, in some cases, 
undoubtedly be made a mental hygienie.” 
Mann (Brit. Med. Journal, 1908, V. II, p. 
1678), expresses a similar opinion thus: “Most 
men if they choose to smoke can do so within 
certain limits without injury to health. Some 
men can exceed such limits with apparent im- 
punity. The extent of the limitation must be 
determined by each man for himself.” 
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