Jan., 1914. Annual Report of the Director. 307 



in existence. It shows all but a few limb bones of a complete individual. 

 The skeleton is mounted in a recumbent position surrounded by matrix. 

 As the rarity of the form will probably make detailed study of its parts 

 frequently desirable, most of the parts have been mounted in such a 

 way that though appearing joined together, they can be easily removed 

 for examination. The mount was prepared from material obtained by 

 the Museum expedition to the Uintah Basin in 19 10. Considerable 

 labor was involved in preparing the mount from the fact that about 

 half the bones were in such a distorted position as found that it was 

 necessary to remove them entirely from the matrix before they could 

 be brought into proper relation for mounting. In order to make room 

 for the new cases mentioned, the cast of Dinotherium was removed from 

 Hall 59 and the icthyosaur and plesiosaur models from Hall 35. The 

 skull of the giant beaver Castoroides obtained during the year was 

 assembled with other bones of the same genus and placed on exhibition 

 in Hall 35. A collection of^ remains of extinct Patagonian mammals 

 including some portions of 'the 'carapace of a glyptodon was installed 

 in a wall case in Hall 59 and a floor case of White River turtles was 

 placed on exhibition in the same hall. Some rearrangement of the 

 adjoining exhibits was made in connection with this addition. A wall 

 case of Oligocene mammals, chiefly titanotheres, was installed in Hall 

 61 and one of Quaternary forms, chiefly remains of the Mammoth and 

 Mastodon, in the same hall. In Hall 60 a case of marine Eocene mam- 

 mals and other forms was installed, and in Hall 63 a table case of Miocene 

 mammals. A wall case of Devonian invertebrate fossils was installed 

 in Hall 61 and one of Cretaceous and Tertiary invertebrates in Hall 65. 

 Some additions were made to the invertebrate fossils installed in Hall 

 7,7, and some rearrangement performed in this connection. The Assist- 

 ant Curator devoted over three months' time to the analysis of Chinese 

 bronzes for the Department of Anthropology. One hundred complete 

 quantitative analyses of these bronzes were made. Other quantitative 

 analyses made by the Assistant Curator during the year included those 

 of the Davis Mountains and MacQuarie River meteorites. Numerous 

 qualitative analyses have also been made in the Lake Avenue laboratory, 

 a number of meteorite sections etched, and several preparations for the 

 exhibition series made. The material stored in trays in Hall 61, which 

 had in part been withdrawn from exhibition at the time of moving from 

 the West Annex, has been carefully gone over, much condensed and 

 provided with better protection from dust and disintegration. It has 

 also been grouped so that every specimen is readily accessible and each 

 specimen has been labeled sufficiently for identification. As at present 

 arranged, the material occupies 150 wooden trays 18 x 26 inches in size. 



