course, to kill a popular prejudice, but we have 
to deal with demonstrated facts not prejudices. 
In the case of inhalation of cigarette smoke the 
danger is from carbon monoxide gas and not 
from nicotine. 
When the difference of opinion amongst 
authoritative investigators are discounted their 
general results will be found to agree very well 
with the general facts observed by all users of 
tobacco. What they see is that probably 
seventy per cent of the adult male population 
under all conditions and circumstances use to- 
bacco within limits of moderation. They see 
around them men who have for many years 
used it, and they do not observe any particular 
harmful results in the user of tobacco compared 
with the nonuser. Men as a rule are not more 
nervous, more subject to heart troubles or age 
troubles than women, who as a sex, do not use 
tobacco. Smokers do not deny and never have 
denied that the abuse of tobacco is harmful. 
The general view that both scientific investi- 
gators and popular observation is able to sup- 
port is well expressed by Clouston, who is a 
world known authority on nervous and mental 
disease. (See Hygiene of Mind, 3rd Ed. Lon- 
don, 1906, p. 260.) 
“If its use is restricted to full grown men, if 
only good tobacco is used not of too great 
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