As the growth of the School continued and as the field of medical knowledge widened, new laboratories and professorships were continually becoming necessary. The early history of the Anatomical Laboratory has been touched upon. Dr. Ford remained in charge until 1894, when he was succeeded by Dr. J. Playfair McMurrich, Toronto, '79, who did much for the advancement of the scientific study of anatomy until his return to Toronto in 1907, when George Linius Streeter, Union, '95, assumed the chair. He resigned in 1914, and Dr. G. Carl Huber, '87_m_, Professor of Histology then became Director of the Anatomical Laboratories. Mention should also be made in this place of the services of Dr. George E. Fothingham, '64_m_, Professor of Ophthalmology from 1870 to 1889, who for some years was connected with the Department of Anatomy and drafted the first good anatomical law. Courses in histology were given as far back as 1856 but the emphasis on scientific methods did not come for many years, and the courses in both histology and physiology were long taught solely by lectures. In 1877, however, the Legislature appropriated $3,500 for a laboratory in those subjects and Dr. C.H. Stowell, '72_m_, was appointed instructor, becoming Assistant Professor in 1880. About the same time a separate chair in physiology was created with Dr. Henry Sewall, Wesleyan, '76, as the first Professor. Under Dr. Sewall the Physiological Laboratory grew rapidly; new apparatus was purchased and many valuable researches were conducted, not the least of these being the proof, published in 1887, that pigeons might be immunized against rattle-snake poison,--one of the first cases of the production of an artificial immunity. The two departments were again united in 1889 under Dr. William H. Howell, Johns Hopkins, '81. He was succeeded in 1892 by Dr. Warren P. Lombard, Harvard, '78, who held both Professorships until 1898, when Dr. Huber, at that time Assistant Professor of Anatomy, was made Director of the Histological Laboratory, becoming Junior Professor in 1899 and Professor of Histology and Embryology four years later.