28 The American Museum of Natural History 



In two instances, further cooperation was extended by giving an 

 illustrated lecture at the library. 



The complete statistics of the Circulating Collections in Public 

 Libraries are given in Appendix F. 



The instruction in the exhibition halls is the equivalent of indoor 



field work and laboratory instruction. As often as was requested, 



members of the Department Staff met classes from 



exhibition the city or suburban schools, Boy Scouts, Camp 



hall Fire Girls, men's and women's clubs, and indi- 



instruction viduals, and conducted them through the exhibition 



halls, calling attention to the principal exhibits 



and their meaning. The total number annually served in this way 



is considerable, and the work helps to spread the educational influence 



of the Museum. 



The regular staff members have been ably assisted throughout 

 the year by Miss Annie E. Lucas, who as a volunteer assistant has 

 been very helpful in conducting wounded service men through the 

 Museum. 



General education has been advanced by the large amount of 



photographic work done. Our two photographers have been fully 



occupied in making illustrations for Natural 



photographic History, in supplying prints to the Publicity 



service Committee, in making photographs for the 



scientific publications, and in preparing large 



numbers of slides for lectures and for sales. The reference series 



of photographs and negatives has been increased not only by the 



material produced in the Museum, but by large series of negatives 



from expeditions and on deposit. 



In October, Miss Ann E. Thomas, who had been a member of 



the Staff since 1914, resigned to accept a position with the Bureau 



of Industrial Research. Miss Ruth E. Crosby, a 



changes in graduate of Wellesley, was appointed to this 



staff vacancy and has been placed in charge of the 



work for the blind and the library loans and also 



assists in the lecture and docent work. Early in the year Miss 



Virginia B. McGivney resigned as Slide Librarian, and in November 



Miss Grace E. Fisher was appointed in her stead. During the 



interim, this branch of the Museum's work was in charge of Miss 



Dorothy Van Vliet as Acting Slide Librarian and was efficiently 



conducted by her and Miss Helen W. Russell. 



As usual the principal administrative burdens of the Department 

 have fallen upon the shoulders of the Associate Curator, Dr. G. Clyde 



