develop a morbid hankering for a repetition of the prescription in constantly increasing doses.
Compare the effects of outdoor exercise with those of Dr. Quack's Digestion Bitters, as characteristic instances of normal and abnormal tonios. Both prescriptions tend to stimulate the appetite. But how? and at what expense? To the palate of a healthy child alcohol is almost as repulsive as corrosive sublimate: Nature's protest against the incipience of a health-destroying habit. Nor does instinct yield to the first disregard of its appeals: Nausea, gripes, nervous headaches and gastric spasms warn the novice again and again. But we repeat the dose, and Nature, true to her highest law of preserving existence at any price, and realizing the hopelessness of the life-endangering struggle, finally chooses the alternative of palliating an evil for which she has no remedy, and adapts herself to the abnormal condition. "The body of the dram-drinker," says a medical reformer, "becomes a poison-engine, an alcohol-machine, performing its vital functions only under the spur of a specific stimulus. And only then the unnatural habit begets that craving which the toper comes to mistake for the prompting of a healthy appetite—a
