8 REPORT OF NATIONAL MUSEUM, 1922. 



Department of Biology — Continued. 



Division of Marine Invertebrates: Waldo L. Schmitt, curator; C. R. Shoe- 

 maker, assistant curator; P. S. W. Conger, aid; H. K. Harring, custodian 

 of the rotatoria ; Mrs. Harriet Richardson Searle, collahorator ; Max M. 

 Ellis, collaborator. 

 Division of Molhisks: William H. Dall, honorary curator; Paul Bartsch, 

 curator; William B. Marshall, assistant curator; Mary Breen, collab- 

 orator. 



Section of Helminthological Collections : C. W. Stiles, custodian ; B. H. 

 Ransom, assistant custodian. 

 Division of Echinoderms: Austin H. Clark, curator. 



Division of Plants (National Herbarium) : Frederick V. Coville, honorary 

 curator; W. R. Maxon, associate curator; J. N. Rose, associate curator; 

 P. C. Standley, assistant curator; Emery C. Leonard, aid; Ellsworth P. 

 Killip, aid ; F. W. Penned, collaborator. 



Section of Grasses : Albert S. Hitchcock, custodian. 

 Section of Cryptogamic Collections: O. F. Cook, custodian. 

 Section of Higher Algae : W. T. Swingle, custodian. 

 Section of Lower Fungi : D. G. Fairchild, custodian. 

 Sections of Diatoms : Albert Mann, custodian. 

 Associates in Zoology : C. Hart Merriam, W. L. Abbott, Mary J. Rathbun, 



David Starr Jordan. 

 Associate in Botany : John Donnell Smith. 

 Collaborator in Zoology : Robert Sterling Clark. 

 Department of Geology : 



George P. Merrill, head curator. 

 Division of Physical and Chemical Geology (systematic and applied) : 



George P. Merrill, curator ; E. V. Shannon, assistant curator. 

 Division of Mineralogy and Petrology: F. W. Clarke, honorary curator; 

 W. F. Foshag, assistant curator ; Frank L. Hess, custodian of rare 

 metals and rare earths. 

 Division of Paleontology: R. S. Bassler, curator; Charles E. Resser, as- 

 sistant curator ; Jessie G. Beach, aid. 



Section of Invertebrate Paleontology : T. W. Stanton, custodian of 



Mesozoie collection; William H. Dall, associate curator of Cenozoic 



collection ; T. Wayland Vaugban, custodian of Madreporarian corals. 



Section of Vertebrate Paleontology : Charles W. Gilmore, associate 



curator; James W. Gidley, assistant curator of fossil mammals. 

 Section of Paleobotany: David White, associate curator; F. H. Knowl- 

 ton, custodian of Mesozoie plants. 

 Associates in Paleontology : Frank Springer, E. O. Ulrich. 

 Associate in Petrology : Whitman Cross. 

 Department of Arts and Industries : 

 William deC. Ravenel, director. 

 Division of Textiles: Frederick L. Lewton, curator; Mrs. E. W. Rosson, 

 aid. 



Section of Wood Technology: William M. N. Watkins, assistant 

 curator. 

 Division of Medicine: Charles Whitebread, assistant curator. 

 Divisions of Mineral and Mechanical Technology: Carl W. Mitman curator; 

 Paul E. Garber, aid ; Chester G. Gilbert, honorary curator of mineral 

 technology ; Paul M. Frank, assistant curator of mineral technology ; 

 George W. Spier, custodian of watches. 



