"It may be seriously questioned whether the blood of persons who take iodide of potassium continuously is not decidedly impoverished, instead of being purified, as is claimed by the manufacturers. It is not uncommon to find persons who have used continuously six, eight, or ten pint bottles of one of these preparations. "Unlike sarsaparilla, the iodide of potassium is classed among poisons by nearly every writer upon toxicology." Practically all the proprietary remedies have their most potent principle in the supposed mystery of their composition. As a matter of fact, all are simple prescriptions, well known to physicians, and owing their successful treatment of many ills much more to the printer's ink used to secure their sale than to any pharmaceutical ingredient which they contain. No important remedy has ever been put on the market by advertising methods. Exposure of the charlatanry of such methods will not, however, cause an interruption of their sale. Long ago Barnum said that people wish to be humbugged, and there is no doubt that they have been, are, and will be humbugged just to the extent to which they lay themselves open to the alluring methods of the advertiser. It does seem too bad, however, that the influence of the clergymen and of religious as well as charitable visitors--an influence acquired because of the confidential position they occupy and the feeling of good faith their mode of life inspires--should be abused for the encouragement and extension of what is manifestly a great evil. Alcohol and iodide of potash are not the only drugs likely to do harm that are incorporated in proprietary medicines. Great complaints have recently been made with regard to the spread of the cocaine habit in this country. Not a few of the remedies that are supposed to give immediate relief to colds in the head contain cocaine in dangerous amounts; and there seems no doubt that in many cases the drug habit for this substance has been acquired innocently and {98} unconsciously at first by the use of such preparations. These are only the more notable evils likely to result from the indiscriminate employment of medicines of whose composition there is complete ignorance, and of whose effect there can be only the judgment dependent upon the subjective feelings of the patient. It must not be forgotten that the patient's feelings are for the moment often favourably influenced by some substance that may do no good to the ailment, though making the patient less sensitive to any symptoms from which he was suffering; but in the end doing positive harm, because of the contraction of the alcohol or some drug habit, or because the suppression of symptoms may be the very worst thing for the patients, since it allows the underlying ailment to progress to a serious stage without forcing them to have it treated _in radice_.