Report of the President 33 



year, and a small collection has already been received from 

 him. His work promises excellent results and will be con- 

 tinued during the coming year. 



The White Bighorn Sheep Group was completed early in the 

 year, and a Fur Seal Group, the gift of the late Mr. D. O. Mills, 

 has been prepared and placed on exhibition; also a hippo- 

 potamus and several large African antelopes. The new Loon 

 Group has been added to the series of Habitat Groups of 

 Birds, and work on the Mount Orizaba Life-Zone Group is 

 well under way. 



Six papers, prepared by the Curator, have been published 

 during the year in the Museum Bulletin, five of which relate to 

 mammals and one to birds. One of them is a final report on 

 the mammals recently received by the Museum from Nicaragua. 

 As usual, the Curator has also had editorial supervision of the 

 Bulletin. 



Mr. Miller, Assistant in Ornithology, has spent much time 

 on a monographic review of the birds of Nicaragua, based on 

 the Richmond collection, which will be ready for publication in 

 the next volume of the Bulletin. 



EXTINCT VERTEBRATES 

 Henry Fairfield Osborn, Curator Emeritus ; W. D. Matthew, Curator 



Department of Vertebrate Palaeontology. — The most 

 important accessions of the year have been through Museum 

 expeditions to the Cretaceous Dinosaur beds of Montana and 

 of Alberta, Canada, in charge of Mr. Brown, and to the Lower 

 Eocene of Wyoming, in charge of Mr. Granger. Both ex- 

 peditions were more than usually successful. Mr. Brown ob- 

 tained a large and valuable collection, including skeletons of 

 the Duck-billed Dinosaur, of a diminutive Horned Dinosaur 

 and of a large Armored Dinosaur. Mr. Granger's party 

 secured a skeleton of the Four-toed Horse, Eohippus, repre- 

 senting a somewhat older stage in the Ancestry of the Horse 

 than has been known hitherto, besides a large series of skulls, 

 jaws, etc., of Lower Eocene mammals, many of them new to 

 science. Dr. W. J. Sinclair, of the geological staff of Prince- 



