The Emperor Frederick's law deserves profound respect and consideration because of the place that it holds in the legal regulation of the practice of medicine. Anyone who thinks that evolution must have brought us in seven centuries much farther in this matter than were the people of the later Middle Ages should read this law attentively. Everyone who is interested in medical education should have a copy of it near him, because it will have a chastening effect in demonstrating not only how little we have done in the modern time rather than how much, but above all how much of decadence there was during many periods of the interval. The law may be found in the original in "The Popes and Science" (Fordham University Press, N.Y., 1908). Three years of preliminary university education before the study of medicine might be taken up, four years of medical studies proper before a degree was given, a year of practice with a regularly licensed physician before a license to practise could be obtained, a special course in anatomy if surgery were to be practised; all this represents an ideal we are striving after at the present time in medical education. Besides this, Frederick's law also regulates medical fees, requires gratuitous attendance on the poor for the privilege of practice accorded by the license, though the general fees are of a thoroughly professional character and represent for each visit of the physician about the amount of daily wage that the ordinary laborer of that time earned. Curiously enough, this same ratio of emolument has maintained itself. This law was also a pure drug law, regulating the practice of pharmacy, and the price as well as the purity of drugs, and the relations of physicians, druggists, and the royal drug inspectors whose business it was to see that only proper drugs were prepared and sold. All this is so much more advanced than we could possibly have imagined, only that the actual documents are in our possession, that most people refuse to let themselves be persuaded in spite of the law that it could have meant very much. Especially as regards medical education are they dubious as to conditions at this time. To them it seems that it can make very little difference how much time was required for medical study or for studies preliminary to medicine, since there was so little to be learned. The age was ignorant, men knew but little, and so very little could be imparted no matter how much time was taken.