Suggestion in Colds.--Many remedies acquired a reputation for breaking up coughs and colds. It is, however, extremely doubtful whether any one has ever aborted a cold, or any other infection, that had gained a hold on the patient. We now know that this common affliction is not due to cold but to absorption of infectious material. Nansen spent two winters near the North Pole without catching any cold, and his men were as healthy as himself. He had been back in civilization scarcely a week before he and his men were confined to bed with a grippy cold. In the far north, and high on mountains where the temperature is low, colds are not as common as they are in crowded cities and especially among those who are much in crowds. Cold weather only predisposes to the infection, and after it has occurred it is sure to run its course. That course may be longer or shorter. The cold is usually preceded by chilly feelings. Every one knows it is possible to have chilly feelings that seem to portend a cold, yet be well the next day. If in the meantime any remedy is taken, credit will be given to the remedy. When a cold was supposed to be merely a disturbance of circulation or a congestion, one might expect to break it up. Now that we know that it is a microbic infection, and know further that microbic diseases are usually cured by a definite reaction on the part of the body, we are not so likely to think of breaking them up. There are still physicians who think they can abort a threatened pneumonia or abbreviate typhoid fever, but they are not those who know most about the science of medicine. We have the story, then, of a series of remedies used with great confidence in coughs and colds, some of them physically beneficial, many of them, especially those containing opium, often physically harmful, yet taken with such confidence that undoubtedly the patient was helped through his mind if not otherwise. What is thus true for this class of diseases can also be said of other minor affections. Many internal remedies have been used for boils and styes and other external infections and have often had wide vogue. The reason for their acceptance as remedies has been that the giving of anything produces a more hopeful attitude in the mind of the patient and this, by bettering the general health, sometimes overcomes the tendency that may exist to a repetition of such infectious processes.