36 ANNUAL REPORT SINOTHSONIAN INSTITUTION, 1922. 



with the specimens. The collections of graphic arts on display in 

 the Smithsonian Building were rearranged so that exhibits of a 

 kind, both historical and technical, are located near together for easy 

 examination. 



The classification of the collections by members of the staff has 

 produced the usual amount of research work on the material in- 

 trusted to their care; and the usual generous cooperation of out- 

 siders has been of the utmost assistance in enhancing the scientific 

 value of the collections. The total number of papers by members 

 of the staff, or based partly or wholly on National Museum material 

 by outsiders, published during the year is 332. 



EXPLORATIONS AND FIELD WORK. 



From the standpoint of exploration and expeditions, the year just 

 completed shows very little improvement over 1920-21. The work 

 carried on by various other governmental agencies, particularly by 

 the United States Geological Survey, the Bureau of Fisheries, the 

 Biological Survey of the Department of Agriculture, and the Bureau 

 of American Ethnology has, as usual, resulted in important material 

 for the national collections. 



The number of expeditions contributing material to the depart- 

 ment of biology, according to the reports of curators, was 18, of 

 which no less than 10 were both financed and directed by outside 

 friends and correspondents, 7 were financed by others and partly 

 or wholly directed by members of the staff of the Museum, while 

 only 1 was entirely controlled by the Museum. In the department 

 of geology, extensive field work was confined entirely to the division 

 of paleontology. 



Besides the field work described here, a number of other expedi- 

 tions in which the Museum was interested are mentioned in the first 

 part of this report under the heading " Explorations and researches." 



The work of Mr. Arthur de C Sowerby in China, interrupted by 

 the World War, was resumed, a shipment of specimens from the 

 Province of Fukien being received. The expenses of this work are 

 met by Mr. Robert Sterling Clark, who generously contributes all 

 the material to the Museum. Special effort is being directed to 

 securing vertebrates from southern and other parts of China not 

 hitherto represented in the national collections. 



Dr. William M. Mann, while attached to the Mulford Biological 

 Exploration of the Amazon Basin, collected a large number of insects 

 and some miscellaneous material of other kinds. This expedition 

 was organized by the H. K. Mulford Co., of Philadelphia, under the 

 direction of Dr. H. H. Rusby, chiefly for the purpose of studying 

 drug plants, but also for making general biological collections. By 

 invitation. Doctor Mann was attached as entomologist and assistant 



