THE LYMPHATICS OF THE DENTAL REGION

In place of the usual review of the progress of dental science and art, in the year past, which is given in a chairman's address, your chairman has decided to present a report of the work done in the Histological Laboratory of the College of Dentistry of the University of Illinois in the last three years. Two years ago, at the Detroit session, the first of this work was reported to this section. First, I want to say that the technical work has been done by Dr. Dewey, in my laboratory, and she has prepared the review of the literature. THE LYMPHATIC SYSTEM Schweitzer 1 deserves the credit of first demonstrating, by injection, the presence of lymphatic vessels in the dental pulp and peridental membrane. Our work has corroborated his results, and filled out some of the gaps in his findings, especially in showing through its entire extent the drainage