MH page 327

Tobacco is a slow, insidious, but most malignant poison. In whatever form it is used, it tells upon the constitution; it is all the more dangerous because its effects are slow and at first hardly perceptible. It excites and then paralyzes the nerves. It weakens and clouds the brain. Often it affects the nerves in a more powerful manner than does intoxicating drink. It is more subtle, and its effects are difficult to eradicate from the system. Its use excites a thirst for strong drink and in many cases lays the foundation for the liquor habit.

Tobacco is a malignant poison that progressively harms the constitution, clouds the brain, and predisposes individuals to strong drink. The text asserts specific toxicological and psychological effects of tobacco use on the human body.