One of the writers has told of his experience many years ago, when he went to a physician and requested to be helped in keeping well. He went to Battle Creek Sanitarium on account of the illness of his wife, and when one of the physicians proposed to him that he himself undergo the treatments, he answered (having in mind this earlier experience, and of the doubts it had bred in him), “There is nothing the matter with me at present that I know of.” The answer of the Sanitarium physician was, “The less there is the matter with you the better, from our point of view.” And so he realized that at last he had found a place where his own idea of health-preservation was understood. He accepted joyfully the offer to assist him in getting a scientific understanding of his own bodily condition. A drop of his blood was taken and analyzed, microscopically and chemically. He went to the diet table, and for three days ate precisely measured quantities of specified foods; during the period all his excretions were weighed and analyzed and examined under the microscope. A thorough physical examination was made, and also a series of tests, upon a machine invented by Dr. Kellogg, to register the strength of each group of muscles of the body. The results of all these examinations were presented to him in an elaborate set of reports and charts, together with a prescription for treatments, diet and exercise. He had stated that there was nothing the matter with him, so far as he knew. He found that anaerobes—the dangerous bacterial inhabitants of the intestinal tract—numbered something over four billion to the gram of intestinal contents—a gram being about a thirtieth part of an ounce. During the six weeks of his stay at the Sanitarium the more important of these tests were repeated weekly; and when he left, the number of anaerobes had been reduced nearly ninety per cent. Dr. Kellogg terms the system of treatment employed by the Sanitarium the Physiologic Method, and he writes of it as follows: “The Physiologic Method consists in the treatment of the sick by natural, physical, or physiologic means scientifically applied. “The haphazard or empirical use of water, electricity, Swedish movements, and allied measures is not the Physiologic Method. It is no method at all. It is empiricism, at best; at its worst, it is quackery. The application of the Physiologic Method requires much more than simply a knowledge of the technique of baths, electricity, movements, etc. It requires a thorough knowledge of physiology, and an intelligent grasp of all the resources of modern medical science. For, while the Physiologic Method depends for its curative effects upon those natural agencies which are the means of preserving health, and which may be relied upon to prevent disease as well as to cure, it recognizes and employs as supplementary remedies, all rational means which have by experience been proved to be effective.