214 Lull— Development of Vertebrate Paleontology. 



work on the evolution of the reptiles, a volume which is 

 eagerly awaited by his colleagues. It is in morphology 

 that Williston's greatest strength lies and some of 

 his most effective work on the mosasaurs has appeared 

 in the Journal. 



1880-1900. 



The next decade, that of 1880-1890, saw a number of 

 notable additions to the workers in vertebrate paleontol- 

 ogy : Henry F. Osborn, W. B. Scott, E. W. Shufeldt, J. L. 

 Wortman, George Baur, F. A. Lucas, and F. W. True. 

 Shufeldt is our highest authority on the osteology of 

 birds, both recent and extinct, having recently described 

 all of the extinct forms contained in the Marsh collec- 

 tion ; True wrote of Cetacea ; Lucas of marine and Pleis- 

 tocene mammals and birds, and has also written popular 

 books on prehistoric life. Lucas 's greatest service, how- 

 ever, lies in the museums, where he has manifested a 

 genius second to none in the installation of mute evi- 

 dences of living and past organisms. Wortman was for 

 a time associated with Cope, later with Osborn in the 

 American Museum, again at the Carnegie Museum at 

 Pittsburgh, and finally at Yale in research on the Bridger 

 Eocene portion of the Marsh collection. His work has 

 been chiefly the perfection of field methods in vertebrate 

 paleontology, and as a special investigator of Tertiary 

 Mammalia, treating the latter largely from the morpho- 

 logic and taxonomic standpoints. Wortman 's Yale 

 results on the carnivores and primates of the Eocene, 

 as yet unfinished, were published in the Journal in 

 1901-1904. 



William B. Scott is a graduate of Princeton, and has 

 spent thirty-four years in her service as Blair Professor 

 of Geology and Paleontology. His first publication, in 

 1878, issued in conjunction with Osborn and Speir, 

 described material collected by them in the Eocene for- 

 mations of the West, and since that time Scott's research 

 has been entirely with the mammals, on which he is one of 

 our highest authorities. His most notable works have 

 been a History of Land Mammals of the Western Hemi- 

 sphere, 1913, and the results of the Patagonian expedi- 

 tions by Hatcher, which are published in a quarto series 

 in conjunction with W. J. Sinclair, although they are the 

 authors of separate volumes, Scott's work being, mainly 



