inadvisable at this time to attempt so large a task; however, over 1,500 foreign terms, principally from the French, Spanish, Italian, German and Japanese, have been included, merely giving the equivalents in English.

The original policy that every word defined should be found in its own alphabetical place in the main vocabulary had to be deviated from, because of the present formative status of dental nomenclature, under which not only is the profession at sea concerning many terms, but even noted specialists have not yet agreed among themselves on the terms to be used. This is notably true of orthodontic terms* and of those relating to periodontology and denture prosthesis. It has therefore been found advisable to add a* supplement in which the terms and definitions recommended in these specialties are grouped under their proper headings. It is to be hoped that members of the profession and specialists through their organizations will reach an agreement as to the terms to be given preference or to be used exclusively.

It has been a difficult task to obtain as many of the eponymic terms as is desired. It is but just and proper, and an incentive to students and investigators, that their names become associated with the discoveries and inventions they make and perfect or the methods of procedure which they introduce. No doubt it is due to modesty and diffidence that many members of the profession have failed to furnish the information sought. We should like to give in the case of every original method or discovery the full name and year of birth of the originator, with a complete list of his discoveries, inventions, methods, etc. May we hope that individuals who have not been so credited will furnish that information?

It was impossible in some instances to resist the temptation to vary from the purely dictionary phase and fall into the encyclopedic. This, however, while in creasing the volume of matter presented, rather adds to than detracts from the value of the work. In the supplement a number of interesting and useful illustrations have been added, as a work of this nature is often consulted by others than the members of the profession. It will be found that the invitation extended to all of the dental schools has met with a fair response.

A perusal of these pages should convince anyone with the vastness of our calling, of the close relationship which dentistry bears to medicine and to other sciences and arts. During the past quarter of a century (with due acknowledgment to the noble men of the two preceding generations) dentistry has passed from a mechanical trade to a high plane of professional art and science. The dentist today is not merely a maker and repairer of teeth, but a scientist and a veritable artist. To make acceptable substitutes for lost natural teeth requires not only a thorough knowledge of anatomy, physiology, pathology and chemistry, but of the principles of engineering, of sculpture and of art in general. To mold the face into beauty, to cause the colors of teeth and face to blend as in nature, demands a high type of artistic skill. While it is essential that the dentist must have a fair knowledge of general medicine, and the terms included in this work cover that ground, it has not been considered necessary to enter into detail concerning diseases, even though they