EDITORIAL 403 



brought to light; and in 1878, new species of Ceratodus, of 

 Dinosaurs, and of Pterodactyles were described. The next year 

 he described another new order, the Sauranodonta from the 

 Jurassic of the Rocky Mountains, and wrote the paper on Poly- 

 dactyl horses, recent and fossil, setting forth in brief the history 

 of the horse ancestry. The monograph on the Odontornithes 

 was published in 1880. Numerous papers followed as the great 

 and peculiar types of Dinosaurs were worked out ; the Stego- 

 saurus, the Brontosaurus, the Ceratopsidse, Triceratops, etc.; 

 and in 1896, an elaborate report on the Dinosaurs was published 

 as a part of the Sixteenth Annual Report of the United States 

 Geological Survey, not in the form of a monograph. In 1884. 

 the skull of Pteranodon, the Pterodactyl without teeth, was 

 elaborated, and the monograph on the Dinocerata, the gigantic 

 extinct order of mammals, was published. 



During the last ten years of his life, although there were 

 fewer great discoveries to announce, the papers in elaboration of 

 the immense accumulation of materials illustrating fossil verte- 

 brates appeared in rapid succession ; over one hundred titles 

 having been added to the list of his published papers during 

 these years. Among the more important contributions during 

 this period were his discussions of the relations of Pithecanthropus 

 erectus ; on the age of the beds on the Atlantic coast which he 

 called Jurassic ; and important additions to knowledge of Dino- 

 saurs, Tertiary and Cretaceous mammals, birds, fossil footprints ; 

 the description of a new Belodont reptile from the Connecticut 

 River sandstone ; and on sundry other subjects. 



Professor Marsh was honored by election to membership and 

 office in the principal societies and academies devoted to science 

 in this and other countries. He was for two terms President of 

 the National Academy of Sciences, and in 1897 received the 

 Cuvier prize from the Institute of France. In 1886, he received 

 the honorary degree of Ph.D. from the University of Heidelberg. 



He died in the midst of active work. The manuscript for 

 several other monographs on fossil vertebrates was left unfin- 

 ished. Besides the large collections accumulated at his own 



