TOBACCO, is a poison. Dogs, cats and other animals have a veritable horror when one blows tobacco smoke upon them. However, tobacco is a great solace to the nerves; it is a pleasant poison and there is a veritable craving for tobacco among most smokers. Prisoners will lie and steal to get a little tobacco. Tobacco used in moderation is obviously useful as a sedative and preferable to bromide and other more dangerous sedatives.
On the other hand, over-indulgence in tobacco is extremely dangerous; it leads to severe gastric disturbances, affections of the liver, jaundice, and worst of all, it leads occasionally to what is called “amblyopia” a form of blindness which is very difficult to treat and often incurable. Tobacco poisoning may come on quite suddenly; tobacco abuse is apt to produce giddiness and very likely hardening of the arteries.
Inhalation of smoke is undesirable; those who draw smoke into the lungs are liable to the possibility of lung cancer.
The taking of snuff seems to be very useful for those who have very dry noses and are liable to colds beginning in the nose. It is an excellent disinfectant of the nasal passages.