48 Report of the President 



During the year the Museum photographer has made 7,329 



prints, 1,390 slides, 745 negatives, 572 enlargements, and 4 



„ r _>, , transparencies. These numbers, 



Reference Photographs . , . 



- „ T ^. although very large, give no ade- 



and Negatives ? J fi ' ' s 



quate indication of the great amount 



of labor involved in accomplishing the results desired. 



Nearly 4,000 negatives were turned over to this department 

 by the Department of Vertebrate Palaeontology, and these have 

 been placed in our regular files. Our reference file of photo- 

 graphs now numbers 30,892, and our file of negatives numbers 

 29,664. 



Of the 35,000 lantern slides belonging to the Museum, 

 nearly 9,000 have been filed according to a modification of the 

 Dewey system, thus making them much more accessible to the 

 members of the Museum staff. This file is being completed 

 as rapidly as possible. 



GEOLOGY AND EXTINCT INVERTEBRATES 



DEPARTMENT OF GEOLOGY AND INVERTEBRATE 

 PALAEONTOLOGY 



Edmund Otis Hovey, Curator 



The most important event in the year's history of the 



department is the completion and presentation to the Museum 



of the large-scale model of a portion of the prop- 



P . * erty of the Copper Queen Consolidated Mining 



" Company at Bisbee, Arizona, which has been 



constructed at the Museum through the generosity of James 



Douglas, one of our Trustees. The mine and its buildings are 



represented as they were in August-October, 19 10. The actual 



construction of the model was begun in Feb- 



° .. , , ruary, ion. and has occupied the time of 

 Mine Model * t/ • • ^ A < *. . c 



A. Bnesemeister and from two to five assis- 

 tants ever since, in addition to the directive and supervisory 

 work of the Curator. 



