52 REPORT OF NATIONAL MUSEUM, 1900. 



studied the Miocene Rhinoceros and Titanotherium, and a new Stego- 

 saur from the Lower Cretaceous. He has also devoted some time to 

 the study of the skull of Lepidosteus. 



Mr. Schuchert has prepared a preliminary catalogue of Cephalopod 

 genera and has devoted considerable attention to the subject of the 

 Lower Devonian aspect of the Lower Helderberg and Oriskany for- 

 mations. On this subject he is still engaged. He has also continued 

 his work on a monograph of the American fossil starfishes. 



SOURCES OF NEW MATERIAL. 



The principal source of material for the Division of Geology, as in 

 years past, has been the United States (ieological Survey. In addi- 

 tion, mention should be made of the continued interest shown by Mr. 

 F. W. Crosby, and of the cooperation of Prof. C. H. Hitchcock, in the 

 Hawaiian Islands. 



It will be remembered that in 1887 Dr. (-. U. Shepard, jr., deposited 

 in the Museum his meteorite collection, numbering at the time 101 

 specimens. During the past year he has again manifested his interest 

 in the National Museum by depositing the entire series of books, 

 pamphlets, and manuscripts on meteorites, left by his father, the late 

 Prof. C. U. Shepard, and, in addition, his private collection of minerals, 

 consisting of upward of 5,000 carefully selected specimens, many of 

 which are quite rare. The collection is particularly noteworthy for 

 the superb series of Graves Mountain rutiles and lazulites, and also 

 the series of southern phosphates and their associations. The col- 

 lection, as a whole, forms a most important addition to our crys- 

 tallographic series, and is of further interest from an historical stand- 

 point, containing man}^ of Prof. Shepard's types and illustrating the 

 classification prevalent during his day. The acquisition of these old 

 collections is a matter of the highest importance, since such often con- 

 tain materials from localities now exhausted, or which served as types 

 in the original descriptions. Further than this, they serve to keep 

 alive the memory of one who was a pioneer in his line of work, 

 Prof. Shepard's Treatise on Mineralogy, 1832, being the third work 

 on this subject to appear in America from the hands of an American 

 author. 



It will be remembered that Prof. O. C. Marsh, of Yale College, 

 served as vertebrate paleontologist to the United States Geological 

 Survey from 1882 to 1892, inclusive. During these ten years of actual 

 service his department received such allotments as enabled him to 

 employ continuously from seven to ten persons in the capacities of 

 collectors, preparators, clerks, etc., and to accumulate a quantity of 

 exceedingly valuable material, a large proportion of which was still at 

 New Haven at the time of his death. 



After the death of Professor Marsh it was decided by the Director 

 of the Survey, Dr. C. D. Walcott, to transfer the entire collection to 



