62 EEPORT OF NATIONAL MUSEUM, 1899. 



mens; Dr. N. M. Glatfelter, St. Louis, Missouri, 8 specimens; Mr. 

 H. C. Irish, St. Louis, Missouri, 2 specimens; Mr. D. T. MacDougal, 

 Minneapolis, Minnesota, 9 specimens; Prof. E. L. Greene, Catholic 

 University, Washington, District of Columbia, 57 specimens; Mr. 

 H. O. Hall, Army Medical Museum, Washington, District of Colum- 

 bia, 14 specimens; Mr. Theodor Holm, Washington, District of 

 Columbia, 263 specimens; Mrs. M. R. McConnell, Washington, Dis- 

 trict of Columbia, 6 specimens. 



Several specimens of chalcedony have been sent to Mr. J. S. Diller, 

 of the U. S. Geological Survey, for use in connection with his investi- 

 gations, and thin sections of rocks have been supplied to Prof. B. K. 

 Emerson, of Amherst College. 



Specimens of the teeth of Paleozoic sharks have been lent to Dr. 

 C. R. Eastman, of the Museum of Comparative Zoology, Cambridge, 

 Massachusetts, and a number of fossils to Prof. J. W. Beede, of the 

 University of Kansas, for use in connection with the preparation of 

 a monograph on the fossils of the Upper Carboniferous strata of 

 Nebraska and Kansas. 



COOPERATION OF THE EXECUTIVE DEPARTMENTS OF THE GOVERNMENT. 



As in past years, much valuable material has been received from 

 several departments and bureaus of the Government, notably the 

 Department of Agriculture, the U. S. Geological Survey, and the U. S. 

 Fish Commission, under all of which extensive explorations into the 

 resources of this country are continuously in progress. The collec- 

 tions derived from this source are enumerated in the List of Accessions 

 (Appendix H), and those of special interest are also discussed in the 

 reports of the head curators. 



In this connection reference should be made to the services rendered 

 by those curators and custodians who receive no compensation from 

 the Museum. There are now about thirty of these honorary otficers, 

 the majority of whom are in the employ of other branches of the Gov- 

 ernment, and the assumption of the additional duties which they vol- 

 untarily perform in this connection is only rendered possible through 

 the courtesy of the heads of the several departments and bureaus. In 

 accepting the care and development of the collections placed in their 

 charge, they are called upon in most cases to undertake a large amount 

 of arduous routine work for which the Museum has not the means for 

 engaging paid assistants. 



INFORMATION FURNISHED. 



Temporary accessions, consisting almost entirely of material sent 

 to the Museum for identification, have been received to the number of 

 518 (numbers 5070 to 5587). Such specimens are usually returned to 

 the senders unless used up in analysis or found desirable for addition 

 to the collections. The amount of time consumed by members of the 



