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Updated: June 1, 2025
Laws protecting boys from the evil effects of tobacco, not only cigarettes, but other forms as well, are both just and necessary. *Social Custom and the Caffeine Habit.*—By suitable processes a white, crystalline solid, easily soluble in water, can be separated from the leaves of tea, and from the berry of the coffee plant.
An impalpable quality, less easily captured than the scent of a flower, the peculiar and most essential attribute of any work of art! It is the thin, poignant spirit which hovers up out of a play, and is as much its differentiating essence as is caffeine of coffee.
The caffeine, alcohol or whatever the stimulating poison may have been has precipitated the fatigue products from the blood and deposited them in the tissues and organs of the body. Furthermore, the stimulant has benumbed the inhibitory nerves; in other words, it has lifted the brakes from the driving part of the organism, so that the wheels are running wild.
Caffeine and theobromine have also quite different relations. Caffeine, it will be remembered, is the methyl ester of theobromine, and can be prepared from it. When caffeine is carefully oxidized with chlorine, it yields dimethyl-alloxan and methyl-urea. Both theobromine and caffeine are decomposed by heating to 240° C. in sealed tubes with hydrochloric acid, identical products being obtained.
This is the drug caffeine, the substance which gives to tea and coffee their stimulating properties, but not their agreeable flavors. Less injurious, on the whole, than either alcohol or tobacco, caffeine has come into general use in much the same way as these substances.
Chief harm comes to the children who frequent the soda fountains and to those who, on account of constitutional tendencies, should avoid caffeine in all of its forms. It is generally understood that the so-called "soft" drinks are harmless. If this reputation is to be maintained, those containing caffeine must be excluded.
For scientific discussion of these various substances I refer you to technical works. In this chapter will be found only a discussion of their relation to people's welfare, that is, to health and efficiency. Coffee, tea and chocolate contain a poisonous alkaloid which is generally called caffeine.
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