REPORT OF THE SECRETARY VII 
DEPARTMENT OF BroLocy—Continued. 
Collaborator in Zoology: Robert Sterling Clark. 
Collaborators in Biology: A. K. Fisher, David C. Graham. 
DEPARTMENT OF GEOLOGY: 
R. S. Bassler, head curator; Jessie G. Beach, aid. 
Division of Mineralogy and Petrology: W. F. Foshag, curator; E. P. Hender- 
son, associate curator; B. O. Reberholt, scientific aid; Frank L. Hess, 
custodian of rare metals and rare earths. 
Division of Invertebrate Paleontology and Paleobotany: Gustay A. Cooper, 
curator. 
Section of Invertebrate Paleontology: T. W. Stanton, custodian of 
Mesozoic collection ; J. B. Reeside, Jr., honorary custodian of Mesozoic 
collection; Paul Bartsch, curator of Cenozoic collection. 
Division of Vertebrate Paleontology: Charles W. Gilmore, curator; C. Lewis 
Gazin, associate curator* ; Norman H. Boss, chief preparator. 
Associates in Mineralogy: W. T. Schaller, S. H. Perry. 
Associate in Paleontology: T. W. Vaughan. 
Associate in Petrology: Whitman Cross. 
DEPARTMENT OF EXNGINEERING AND INDUSTRIES: 
Carl W. Mitman, head curator. 
Division of Engineering: Carl W. Mitman, head curator in charge; Frank A. 
Taylor, curator.* 
Section of Transportation and Civil Engineering: Frank A. Taylor, in 
charge.* 
Section of Aeronautics: Paul E. Garber, associate curator,* F. C. Reed, 
acting associate curator. 
Section of Mechanical Engineering: Frank A. Taylor, in charge.* 
Section of Electrical Engineering and Communications: Frank A 
Taylor, in charge.* 
Section of Mining and Metallurgical Engineering: Carl W. Mitman, in 
charge. 
Section of Physical Sciences and Measurement: Frank A. Taylor, in 
charge.* 
Section of ‘Tools: Frank A. Taylor, in charge.* 
Division of Crafts and Industries: Frederick L. Lewton, curator; Elizabeth 
W. Rosson, assistant curator. 
Section of Textiles: Frederick L. Lewton, in charge. 
Section of Woods and Wood Technology: William N. Watkins, associate 
curator. 
Section of Chemical Industries: Frederick L. Lewton, in charge. 
Section of Agricultural Industries: Frederick L. Lewton, in charge. 
Division of Medicine and Public Health: Q@harles Whitebread, associate 
curator. 
Division of Gruphic Arts: R. P. Tolman, curator. 
Section of Photography: A. J. Olmsted, associate curator. 
Division or History: T. T. Belote, curator; Charles Carey, associate curator ; 
J. Russell Sirlouis, scientific aid; Catherine L. Manning, assistant curator 
(philately). 
ADMINISTRATIVE STAFF 
Chief of correspondence and documents.—H. S. Bryant. 
Assistant chief of correspondence and documents.—L. E. COMMERFORD. 
*Now on war duty. 
