Medicines to stop pain or to induce sleep are probably the most pernicious of all self-prescribed remedies, for they add to other dangers the possibility of forming drug habits. These habits are so insidious and so powerful that it is not safe to take habit-forming drugs even once except by a doctor's direction. In short periods of time strong people, apparently firm in will and character, have acquired habits from supposedly moderate use of drugs like morphine, cocaine, and alcohol. No one, no matter how sure of his own self-control, can afford to run so grave a risk. PATENT REMEDIES.--Objections to self dosing in general apply even more strongly to using patent medicines. The ingredients of patent medicines are ordinarily unknown, so that using them is unintelligent at best. Sometimes they contain habit-forming or other harmful drugs. In other cases the ingredients are innocent enough, but totally unable to bring about the results claimed for them. The old story about a powerful remedy discovered by accident and thus unknown to the medical profession deceives only the ignorant or credulous; with our present knowledge of chemistry and physiology powerful remedies are not discovered in that way. Even to these comparatively harmless patent preparations there are two serious objections. One is the loss of time, during which the patient may grow worse. The other is that money is obtained under false pretenses; fraud is a common element in the success of patent remedies. One of the least harmful, a substance called "Murine" may be taken as an example[2]. This substance was widely advertised at one time as a "positive cure for sore eyes." Analysis showed it to be a solution of borax, which cost about five cents a gallon to prepare. It sold for one dollar an ounce, or at the rate of $128.00 a gallon. Although it could not bring about the wonderful cures advertised, it was practically harmless, and buyers of "Murine" must have been injured chiefly in pocket. But with "cancer cures" and "consumption cures" it is a different story. Early treatment of these diseases is essential to recovery; delay in many cases means robbing the sufferer of his only chance of life. No drugs are now known that will cure these diseases, and it seems incredible that anyone should be willing to practise such cruel deception upon ignorant people merely for the sake of making money. ADMINISTRATION OF MEDICINE.--Medicines may be introduced into the body in a number of ways. In the majority of cases they are swallowed and finally carried to the tissues by the blood just as digested food is carried.