It is generally believed that in the immature the moderate use of tobacco stunts the normal growth of the body and mind, and causes various nervous disturbances, especially of the heart--disturbances which it causes in later life only when smoking has become excessive. That is to say, though a boy's stomach grows tolerant of nicotine to the extent of taking it without protest, the rest of the body keeps on protesting. Furthermore, many business men will tell you that tobacco damages a boy's usefulness in his work. This is necessarily so, since anything which lowers vitality creates some kind of incompetence. For the same reason the boy who smokes excessively not only is unable to work vigorously, but he does not wish to work at all. This result, apparent during growth, is only less apparent after growth, when other causes may step in to neutralize it. Tobacco, in bringing about a depreciation of the nerve-cells, brings, together with physical results like insomnia, lowered vitality, and restlessness, their moral counterparts, like irritability, lack of concentration, desire to avoid responsibility and to travel the road of least resistance. If there were some instrument to determine it, in my opinion there would be seen a difference of fifteen per cent. in the general efficiency of smokers and non-smokers. The time is already at hand when smokers will be barred out of positions which demand quick thought and action. Already tobacco is forbidden during working hours in the United States Steel Corporation. Many men were prejudiced against smoking until they went to college. There they found themselves "out of it" because they did not smoke. More than that, they found that the smoke of social gatherings irritated their eyes and throat, and they thought that smoking might keep them from finding other people's smoke annoying. A man who had left off smoking told me that at the first "smoker" he attended afterward he found the air offensive and his eyes smarting intolerably, although when he had been helping to create the clouds in which they were sitting he had not noticed it at all. These two experiences are common. For this reason, the social inducements to smoking are considerably greater than those to drinking. The man who refuses to drink may feel as much "out of it" as the man who refuses to smoke, but he has ordinarily, and in the presence of gentlemen, no other penalty to pay. He undergoes no discomfort in spending the evening in a roomful of drinkers, and he can manage to find things to drink that will have for them the semblance of good-fellowship. It is the social features that attend the acquiring and the leaving-off the habit which make smoking difficult to attack. In its present state, even if a boy were thoroughly familiarized in school with the harm tobacco would do him, he would still be seduced by the social side of it.[1] When a habit fosters or traditionally accompanies social intercourse, it is all the harder to uproot.