276 FlEI-D COLIJMRIAN MlSKlM REPORTS, Voi.. I. 



relations sustained with contemporaneous agencies for an exchange 

 of material are very satisfactory and have been productive of much 

 benefit. The preliminary negotiations in the matter of these ex- 

 changes are conducted by the curators of departments, and when 

 ready for conclusion are submitted to the Director for his approval. 

 The cost of carriage is paid in each case by the party receiving the 

 material and, as stated, regular accounts are kept by the Recorder 

 with the persons or institutions with whom exchange relations are 

 established. The catalogues of material available for exchange, 

 heretofore issued, have assisted materially in opening correspond- 

 ence, and several other institutions have adopted this method of 

 acquainting museums and collectors of their possessions. The num- 

 ber of specimens sent in exchange during the year was 3,54^, repre- 

 senting thirty-nine different transactions. The number of specimens 

 received in exchange was 4,226, representing twenty-five transactions. 



Expedition and Field Work. — The expeditions and field work of 

 the Museum have been confined this year to North America, and 

 have all been authorized with special regard to the direct needs of 

 the department in each particular instance, thus carrying out the 

 instructions of the Executive Committee, that staff collections and 

 original research must be upon an outlined system, and confined, as 

 far as possible, to the domestic field. Following is a list of the 

 expeditions of the Museum since the date of the last report : 



Date. Locality. Collectors. Material. 



Nov. 9, 1897, . Northeast Arkansas, . S. E. Meek, . . . Fishes, etc. 



Ian. 15, 1898, . Missouri, O. C. Farrington. . Fossils, etc. 



Jan. 31, 1898, . Tampa, Florida, . . S. E. Meek, . . . Fishes. 



Jan. 28, 1898, . Oraibi, .Arizona, . . . George A. Dorsey \ Plaster Casts 



and F. li. Melville, . ( Moki Indians. 



Mar. 15, 1898, . Southwest Missouri, . H. \V. Nichols, . . Lead and Zinc Ores. 



May 31, 1898, . Missi'pi and Arkansas, 



(.North American Forestrv), . . C. F. Millspaugh, . Plants and Woods. 



Mar. 22, 1898, . Bad Lands, S. Dakota, O. C. Farrington 



and E. S. Riggs 



July 12, 1898, . Olympian Mountains, D. G. Elliot and 



C. E. Akeley, . . . Mammals. 

 July 15, 1898, . Northern Michigan, 



(Xorth Aniencan Forestry;. . . C. F. Millspaugh, . Plants and Woods. 



June 30, 1898, . LaCrosse& Elroy.Wis., E. B. Chope, . . . Insects. 



July 25, 1898, . Havana, Illinois, . . S. E. Meek, . . . Fishes, etc. 



Sept. g, 1898, . Mitchell, Indiana, . . S. E. Meek, . . . Fishes, etc. 



Mr. Dorsey, Curator of the Department of Anthropology, accom- 

 panied by Mr. F. B. Melville, visited the province of Tusayan, 



