“…According to Mendenhall, smoking has an effect similar 6 to rest except that it is a much more marked and rapid effect; and if we may look on resting as a habit, it is not surprising that a more powerful agent, such as smoking, should engulf a much larger number of people. It should be emphasized, however, he adds, that the effects obtained by smoking are much more intense in the way of depression than in the way of stimulation, and thus resemble the action of our so-called habitproducing drugs.…”