Oct., 1904. Annual Report of the Director. 



273 



land animal, seemed to justify a thorough working out of the material 

 on hand. The work was accordingly carried to completion, with 

 results which have been set forth in the scientific publications of the 

 Museum. Seven vertebrae of a Morosaur skeleton collected in 1900 

 were also worked out, this being a dinosaur whose structure is little 

 known, and one of which the Museum possesses the most complete 

 vertebral column so far found. A skeleton of Procamelus collected in 

 1898 was also partially prepared for exhibition. A thorough re- 

 assortment of the study collections and duplicate material of all kinds 

 in the Department was made during the year, for the purpose of re- 

 ducing the space which they occupied, and of classifying the material. 

 Some obsolete material was discarded, and the accessibility of these 

 collections was much increased. For exhibition in connection with 

 the ore collections in Halls 72 and 79, a series of maps has been 

 prepared, upon which are mounted specimens of the ores mined at 

 important producing localities. Relief maps are employed for the 

 purpose, in order to bring out facts of distribution which might other- 

 wise be overlooked. Thus the restriction of profitable gold and silver 

 ores to mountainous regions, and especially the Cordilleras, is shown 

 vividly by these maps, as well as the fact that conditions of transpor- 

 tation, water supply, etc. , resulting from relief, often determine whether 

 ores can be profitably worked. Six maps have thus been prepared or 

 are in process of preparation. These illustrate respectively the im- 

 portant gold and silver producing districts of North America, and the 

 important copper, zinc, iron, and oil producing districts of the United 

 States. The Curator of Zoology reports that 6 skeletons and 23 large 

 skulls have been placed on exhibition, and 2,505 skulls have been 

 cleaned and placed in the study collection, and 3,340 skulls labeled and 

 recorded. 



Printing. — The printing office still shows good results. Its capa- 

 city should be increased, but floor space is not at present available 

 for an extension in the quarters now occupied.' The following table 

 shows the number of label forms and other impressions made during 



the year: 



Labels. Other Impressions. 



Anthropology, 3>352 7,280 



Botany, 624 23,893 



Geology, 2,496 5*250 



Ornithology, 1,300 



Zoology, 555 66,305 



Director's Office, 49,936 



Library, . . . 6 5,Soo 



