Yol. 54.] ANNIVEESART ADDRESS OP THE PRESIDENT. liii 



studied for a brief period in the University of Pennsylvania 

 Medical School. At 23 he travelled abroad, and at 24 he 

 was elected Professor in Haverford College, a position he soon 

 resigned. Later he became connected with the Wheeler and the 

 Hayden United States Geological Surveys. In 1878 he assumed 

 the editorship of the ' American Naturalist.' He held a professor- 

 ship in the University of Pennsylvania and the presidency of the 

 American Association for the Advancement of Science at the time 

 of his death. 



The following quotations are taken from an article in the 

 ' Century Magazine ' of November 1897, by his friend Prof. 

 Henry Fairfield Osborn : — ' His range of study extended with 

 astonishing rapidity — first among the living reptiles and amphibians, 

 then among living and Palaeozoic fishes, then among the great 

 extinct reptiles of New Jersey and the Rocky Mountains, finally 

 among the ancient American quadrupeds. He acquired in turn a 

 masterly knowledge of each type. Irreverent toward old systems, 

 eager and ambitious to replace them by new ones of his own, with 

 unbounded powers of hard work, whether in the field or at his 

 desk, he rapidly became a leading spirit among the workers in the 

 great realm of the backboned creation, both in America and Europe. 

 While inferior in logic, he showed Huxley's unerring vision of the 

 most distinctive feature in a group of animals, as well as the broad 

 grasp of Cuvier and of Cuvier's famous English disciple, Owen. 

 .... He was fortunate in recording the discovery in North-western 

 New Mexico of by far the oldest quadrupeds known, in finding 

 among these the most venerable monkey, in describing to the world 

 hundreds of links — in fact, whole chains — of descent between the 

 most ancient quadrupeds and what we please to call the higher 

 types, especially the horses, camels, tapirs, dogs, and cats. He 

 laboured successfully to connect the reptiles with the amphibians, 

 and the latter with the fi.shes, and was as quick as a flash to detect 

 in the paper of another author the oversight of some long-sought 

 link which he had been awaiting. Thus, in losing him, we have 

 lost our ablest and most discerning critic. No one has made such 

 profuse and overwhelming demonstration of the actual historical 

 working of the laws of evolution, his popular reputation perhaps 

 resting most widely upon his practical and speculative studies in 

 evolution. 



' Many friends in this country and abroad have spoken of the 

 invigorating nature of his companionship. A life of intense activity, 



