JUN 20 1891 E. H.B. CONTRIBUTORS TO VOLUME IV. Arndt, L., D.D.S., Brubaker, Albert P., M.D., D.D.S., Eisenbrey, J. L., D.D.S., Freeman, Arthur B., D.D.S., Gould, Jennie R., D.D.S., Hall, Wm. R., D.D.S., Ivy, Robert S., D.D.S., Stellwagen, Thos. C., M.D., D.D.S., Smith, John S., D.D.S., Smilie, Elton R., D.D.S., Thomas, J. D., D.D.S., Zegers, M., Pastor, D.D.S., - Philadelphia, Pa. Philadelphia, Pa. - Philadelphia, Pa. Philadelphia, Pa. Philadelphia, Pa. Lancaster, Pa. San Francisco, Cal. Philadelphia, Pa. South America. ORIGINAL COMMUNICATIONS. A Retrospect of a Quarter of a Century, Address to Graduating Class of Pennsylvania College of Dental Surgery, Diagnosis vs. Guessing, Double Headers, Embryology of the Human Maxillae and Teeth, First Know You are Right, Lips, The Past, Present, and Future Relations of the Mongolian and |