86 REPORT OF NATIONAL MUSEUM, 1901. 



I "AN -AMERICAN EXPOSITION. 



The <lailv routine of the Museum has been greatly retarded by the 

 work of preparing for the Pan-American Exposition at Buffalo. This 

 was begun early in the year, and. although not occupying all of our 

 time and attention, was continued until the opening of the exposition 

 in May. The exhibits prepared by the various divisions of the depart- 

 ment consisted of: 



A systematic collection of minerals, comprising 735 specimens and 

 occupying five slope top cases. 



Collections illustrating cave deposits, concretionary structures, hot 

 spring and geyser deposits, silicitied woods, and the rocks and soils of 

 the Hawaiian Islands, occupying five wall cases. 



A small case of native elements. 



A systematic collection of invertebrate fossils illustrating the 

 developemenl and classification of the cephalopod mollusks, compris- 

 ing 450 specimens, and a synoptic collection of crinoids, comprising 

 some 300 specimens. 



A mounted skeleton of the gigantic toothed diver. Hesperorrds 

 regalis, from the Cretaceous of Kansas. 



A life-size restoration of the skeleton of the Cretaceous reptile, 

 Triceratops prwsus, from the Cretaceous of Wyoming. 



A life-size restoration of the skeleton of the Zeuglodon, from the 

 Tertiary beds of Alabama. 



The restoration of the Triceratops was accompanied by a small 

 model and painting of the animal as it was supposed to appear in life, 

 the work of Mr. Charles R. Knight. In addition to these, there were 

 two cases of mammoth remains from Indian Territory and Kimmswick, 

 Missouri, collected for the Museum by Mr. Stewart. It had been 

 hoped to include in the exhibit a mounted skeleton of the extinct mas- 

 todon, but a sufficiently perfect one was not found until too late for the 

 exposition. 



The installation of these exhibits at Buffalo required the presence 

 there of Messrs. Lucas, Schuchert, Stewart, Tassin, and the head 

 curator himself, for periods of from six to ten days, and naturally tho 

 ordinary work of the Museum was greatly interrupted thereby. 



PRESENT STATE OF THE COLLECTIONS. 



Tin' department, as a whole, was never in better condition than it is 

 to day. All of the halls are open to the public, and with the excep- 

 tion of the sections of paleobotany and vertebrate paleontology the 

 collections are well arranged and quite completely labeled. A great 

 deal, naturally, remains to be done in the way of substituting new 

 material and rounding out the collections. The sections in arrears are 

 those which have been most recently established, and in which, more- 

 over, a great amount of preparatory work is necessary before the 



