[12] The Ebers Papyrus shows that special attention was paid to diseases of the eyes, the nose, and throat, and we have traditions of operations upon these from very early times. Conservative surgery of the teeth, and the application of prosthetic dental apparatus, being rather cosmetic than absolutely necessary, might possibly be expected not to have developed until comparatively recent times; but apart from the traditions in Egypt with regard to this speciality, which are rather dubious, we have abundant evidence of the definite development of dentistry from the long ago. The old Etruscans evidently paid considerable attention to prosthetic dentistry, for we have specimens from the Etruscan tombs which show that they did bridge work in gold, supplied artificial teeth, and used many forms of dental apparatus. At Rome the Laws of the Twelve Tables (_circa_ 450 B.C.) forbade the burying of gold with a corpse except such as was fastened to the teeth, showing that the employment of gold in the mouth for dental repair must have been rather common. We have specimens of gold caps for teeth from the early Roman period; and there is even a well-confirmed tradition of the transplantation of teeth, a practice which seems to have been taken up again in the later Middle Ages, and then allowed to lapse once more until our own time. [13] Dr. Petells, discussing this use of livers (_Janus_, 1898), says that there has been some tendency to revert to the idea of biliary principles as of value in external eye diseases. [14] "Gesammelte Abhandlungen aus dem Gebiete der Oeffentliche Medizin," Hirschwald, Berlin, 1877. [15] See Walsh, "The Thirteenth, Greatest of Centuries," New York, seventh edition, 1914. [16] Burdett, "Hospitals and Asylums of the World." [17] London, 1909. [18] To be found in Huillard-Brehollis' "Diplomatic History of Frederick II. with Documents" (issued in twelve quarto volumes, Paris, 1851-1861). [19] Under logic at this time was included the study of practically all the subjects that are now included under the term the seven liberal arts. Huxley, in his address before the University of Aberdeen, on the occasion of his inauguration as rector of that university, said: "The scholars (of the early days of the universities, first half of the thirteenth century) studied grammar, rhetoric, arithmetic and geometry, astronomy, theology and music." He added: "Thus their work, however imperfect and faulty, judged by modern lights, it may have been, brought them face to face with all the leading aspects of the many-sided mind of man. For these studies did really contain, at any rate in embryo--sometimes, it may be, in caricature--what we now call philosophy, mathematical and physical science and art. And I doubt if the curriculum of any modern university shows so clear and generous a comprehension of what is meant by culture as the old trivium and quadrivium does." Science and Education Essays, p. 197. New York, D. Appleton and Co. 1896.