228 PROCEEDINGS OF THE ACADEMY OF [Apr., 



vertebrate palaeontology embrace 197 titles, including Emluiion of Mammalian 

 Molar Teeth, published in 1907, and The Age of Mammals, published in 1910, 

 beside the American Museum volumes above referred to. They cover contribu- 

 tions to the history of the extinct fishes, reptiles, and mammals. Dr. Osborn 

 succeeded Edward D. Cope as Vertebrate Palaeontologist of the Geological 

 Survey of Canada between the years 1900-1904. In 1900 he was appointed 

 successor to Othniel C. Marsh as Vertebrate Palaeontologist of the United States 

 Geological Survey, and is still engaged on the series of palaeontological mono- 

 graphs which were left unfinished by Marsh, especially those on the titanotheres 

 and the Sauropoda. 



Among the most important of his investigations are the following: the evolu- 

 tion of the ungulate foot, the evolution of the types of molar teeth of the mam- 

 mals, the evolution of the perissodactyl ungulates, especially the rhinoceroses, 

 horses, and titanotheres, the correlation of the Tertiary, geological horizons of 

 Europe and North America, the principles of the evolution of the skull in mam- 

 mals, and the laws of evolution as observed in palaeontology. 



Dr. Osborn's administration of the Department of Vertebrate Palaeontology 

 in the American Museum of Natural History has been instrumental in assembling 

 the most extensive collection of vertebrate fossils in existence, including the 

 complete vertebrate fauna of more than half of the Tertiary horizons of the West 

 and the complete phyletic evolution of many of the most important types of 

 mammals. This administration has been notable also in establishing the 

 American Museum as a training school in vertebrate palaeontology from which 

 have issued many of the leading vertebrate palaeontologists of the younger 

 generation in this country and abroad. There have been corresponding advances 

 in palaeontological technique and the educational methods of palaeontology, so 

 that the fossil collections in the American Museum have become a standard for 

 the same work in other institutions. 



In addition to these palaeontological and geological activities Dr. Osborn has 

 held many educational and administrative positions, including the professorship 

 of comparative anatomy at Princeton (1883-1900) and the professorship of 

 zoology at Columbia University (1891-1914). Since 1890 he has been instru- 

 mental in the development of the American Museum of Natural History and 

 the founding and development of the New York Zoological Park. His contribu- 

 tions on the administration of the Museum and the Zoological Park number 

 twenty-six titles. 



His total contributions to science cover a broad field, embracing in the 390 

 titles beside vertebrate palaeontology researches and addresses on zoology, 

 embryology, neurology, psychology, odontology, zoogeography, geology, biology, 

 antropology, biography, and education. 



The Chair announced the following elections: 

 Members: 



William J. Davis. 



Arthur W. Sheaffer. 



John S. Sharp. 



Correspondents: 



Shibasaburo Kitasato, M.D., of Tokyo, Japan. 



Charles T. Ramsden, of Guantanamo, Cuba. 



Marie Curie, of Paris. 



N. Charles Rothschild, of London. 



Gerritt S. Miller, of Washington, D. C. 



Edmund Heller, of Washington, D. C. r 



Charles W. Richmond, of Washington, D. C. 



Frank M. Chapman, of New York. 



Edgar A. Mearns, of Washington, D. C. 



The following were ordered to be printed : 



