The practical application of the discoveries and recommendations of the new school of dentists can be expressed very simply and briefly, and if followed out, will undoubtedly prove of tremendous service to the white cells in the battle of the blood. It must be remembered that proper mastication of food, which we have seen to be a leading principle of the new hygiene, cannot be carried out unless you have a good and healthy mouth. Five brushings a day at home is the ideal and proper care for every mouth, for those who eat through the ordinary routine of three meals a day. The first thing in the morning the teeth should be thoroughly brushed with tepid water to remove the decomposed mucous and saliva produced in the mouth during sleep. After eating the teeth should be cleansed with the help of a dentifrice. The thorough removal of grease is a chemical process, not to be accomplished by mere brushing, and therefore requires a solvent such as is contained in a good dentifrice. Such duties soon become habits; and if they are based upon common-sense, the health which they will bring will more than compensate for the trouble involved. XIV A UNIVERSITY OF HEALTH There have been frequent references in this book to the Battle Creek Sanitarium, and to Dr. J. H. Kellogg, its superintendent. We have written here of the art of staying well, but many people are sick, and are in need of special advice and assistance; to such we believe that we can do no greater service than to tell them of this Sanitarium and its work. The institution is not a commercial one; its founder is one of the great humanitarians of the time, as well as one of the great scientists. None of its thousand odd men and women workers receive more than a bare living for their services, and the institution is legally so constituted that all its profits must be turned into the work. Therefore, we hold it to be a public duty to spread as widely as possible the facts relating to it. Mr. Horace Fletcher has called Battle Creek the “Mecca of Health.” More aptly still, the Sanitarium has been named a “University of Health”; and no image could be more essentially true. [Illustration: DR. J. H. KELLOGG, Of the Battle Creek Sanitarium.] For, while the people at Battle Creek realize that the record of the institution for more than forty years in curing sick people is one to which they may point with pride, yet in their view this good work is but a trivial thing in comparison with their principal object, which is the conversion of those who come to them to be cured, into home teachers and missionaries of the truths of right living. It is wonderful to observe to what a great extent success has already rewarded their efforts, to see the signs which indicate the growth of public interest in their work.