We urge over and over again the value of early diagnosis in all chronic diseases, for we know that many of them, and this applies particularly to arteriosclerosis, could be prevented from advancing by the recognition of the condition and the institution of proper hygienic and medicinal treatment. _It is the patent duty of every physician to instruct the members of his clientele in the fundamental rules of health._ Recently the President of the American Medical Association, in his address before the 1908 meeting, urged the dissemination of accurate knowledge concerning diseases among the laity. While this may be done by city and state boards of health, it seems far better for the modern trained physician to work among his own people. With concise information concerning the modes of infection and the dangers of waiting until a disease has a firm hold before consulting the health mender, people should be able to protect themselves from infections and be able to nip chronic processes in the bud. But it is difficult to turn the average individual away from the habit of having a drug-clerk prescribe a dose of medicine for the ailment that troubles him. It is really unfortunate that most of the pains and aches and morbid sensations that one has speedily pass away with little or no treatment. Herein lies the strength of charlatanism and quackery. Unfortunate, yes, for a man can not tell whether the trivial complaint from which he suffers is any different from the one that was so easily conquered six months ago. But instead of recovering, he grows worse. Hope that springs eternal in the human breast, leads him to dilly-dally until he at last seeks medical advice, only to find that the disease has made such progress that little can be done. _Instruct the public to consult the doctors twice a year._ The dentists have their patients return to them at stated intervals only to see if all is well. _How much more rational it would be if men and women past the age of forty had a physical examination made twice a year to find out if all is well._