56 REPORT OF THE SECRETARY. 



IX. Fishes. — Dr. Tarleton H. Bean, curator; Peter Parker and B. A. 

 Bean, assistants, detailed from United States Fish Commission. 



X. Comparative Anatomy. — Frederick W. True, curator; F.A.Lucas 

 assistant ; one j^reparator. 



XI. Mollusks. — W. H. Dall, United States Geological Survey, curator; 

 Dr. K. E. C. Stearns, adjunct curator; one clerk. 



XII. Insects. — Dr. C. V. Riley, honorary curator (volunteer). 



XIII. Marine Invertebrates. — Richard Rathbun, curator ; L. H. Bald- 

 win, assistant, and one clerk detailed by the United States Fish Com- 

 mission. 



XIY. Invertebrate Fossils, Paleozic. — C. D. Walcott, United States 

 Geological Survey, honorary curator. 



XV^. Invertebrate Fossils, Mesozoic and Genozoic. — Dr. C. A. White, 

 United States Geological Survey, honorary curator; J. B. Marcou, 

 United States Geological Survey, honorary assistant. 



XVI. Plants, Fossil and Recent. — Lester F. Ward, United States Geo- 

 logical Survey, honorary curator ; one clerk ; one preparator. 



XVII. Mineralogy. — Dr. F. W. Clarke, United States Geological Sur- 

 vey, honorary curator; W. S. Yeates, assistant. 



XVIII. Lithology and Physical Geology. — George P. Merrill, acting 

 curator; one preparator. 



XIX. Metallurgy and Economic Geology. — Fred. P. Dewey, curator; J. 

 A. Allen, assistant. 



Division of Administration. 



The Division of Administration consists of fifteen departments, the 

 organization of which has been described at length in previous reports. 

 A number of additional preparators have been employed for special 

 work upon the collections for the New Orleans Exposition, and an un- 

 usual quantity of objects for the exhibition series has been completed 

 during the year in the workshops, as is shown in the review of the op- 

 erations of the scientific departments. Specially noteworthy" among 

 these is a number of gigantic photograjihic enlargements representing 

 thirteen of the Government buildings in Washington. These are the 

 largest prints ever made, and have been found particularly effective at 

 New Orleans and Cincinnati, it being thought that in an exhibition of 

 the work of the Government Departments, such as has been attempted 

 this year by the United States Executive Board, it was particularly ap- 

 propriate that the public buildings of Washington should be shown in 

 an impressive manner. 



In addition to the regular administrative staff' of the Museum, an ad- 

 ministrative staff" for exhibition work has been maintained since July, 

 1882, under the general charge of the Assistant Director. Mr. R. Ed- 

 ward Earll is the executive officer, and Mr. W. V. Cox financial clerk of 

 this staff, which is increased -from time to time as occasion requires by 

 the employmentof extra clerks and preparators, and to which also, when 



