24 Report of the President. 



Dr. A. L. Kroeber, of the University of California, is at work 

 upon a detailed account of Arapaho ceremonials, based upon 

 materials collected by him for the Museum. 



Mr. William Jones has completed a paper upon the language 

 of the Sauk and Fox, also based upon information collected in 

 the course of Museum expeditions. 



Lectures. — Professors Boas and Farrand have conducted a 

 course of lectures on general ethnography for students of 

 Columbia University, in the lecture room of the Museum, 

 using the collections for purposes of illustration. 



Dr. Wissler, assisted by Mr. Lewis, has given a course of 

 lectures on primitive industries in connection with the exten- 

 sion work of Teachers College. This course has also been 

 given at the Museum, and is based entirely upon the demon- 

 stration of specimens. Dr. Farrand will conduct a similar 

 course during the summer of 1904, and it is hoped that work 

 of this character will develop rapidly in the future. 



Department of Entomology. — After considerable time 

 spent in arranging the collections, the new hall of this de- 

 partment (the gallery floor of the east wing) was opened on 

 March 8, when the entire collection of butterflies, donated 

 by the late Very Reverend Eugene A. Hoffman, was placed 

 on exhibition for the first time. This donation consists of 

 about five thousand specimens of Lepidoptera, arranged in fif- 

 teen cases on the east and the south side, and the local collection 

 transferred from the old building to the new hall, occupying 

 the rail cases. Excellent exhibition space has been given to 

 specimens of insect architecture and to the Jesup collection of 

 insects injurious to forest trees. Much time has been spent in 

 the regular routine work of the department. The sets of in- 

 sects for the use of schools have been in circulation, and many 

 specimens from our study collections have been used by 

 visiting scientists. 



Among the notable additions to the department is a collec- 

 tion of over eight thousand Diptera, containing more than one 

 thousand species and one hundred and seventy types, given by 



