REPOKT OF NATIONAL MUSEUM, 1914. 127 



the skeletons of the two reptiles T hescelosaurus neglectus and Allo- 

 sau7'us fragilis^ elsewhere referred to, were installed, the porpoise 

 skeleton from Chesapeake Beach, Md., was temporarily placed, and 

 a long wall case was utilized for partial skeletons of early mammals. 

 In paleobotany the exhibit of fossil wood was improved by placing 

 it in two long wall cases; several greatly enlarged photographs rep- 

 resenting fossil forests of Carboniferous and Mesozoic age, and a 

 number of large illustrations of restorations of Paleozoic plants, 

 were added. 



Explorations. — The only field work of importance was carried on 

 in connection with the division of paleontology, although the head 

 curator made some observations in the summer of 1913 while col- 

 lecting feldspar for the educational series, and briefly studied a 

 pyroxenite occurrence at South Freeport, Me. 



Two explorations were conducted by Secretary Walcott during the 

 season of 1913, one in the Robson Peak District of British Colum- 

 bia and Alberta, Canada, the other at the celebrated Middle Cam- 

 brian localities near Field, British Columbia. In both regions the 

 investigations of previous summers were continued and rich col- 

 lections of fossils, including a number of new genera and species, 

 were obtained. The material brought to "Washington aggregated 

 about two tons of carefully selected specimens. The curator of the 

 division. Dr. Bassler, spent several weeks of the summer in con- 

 tinuation of his studies of the Cambrian and Ordovician rocks of 

 western Maryland, completing the geologic mapping of this area and 

 securing many fossils. During July, under detail to the Geological 

 Survey, he mapped the Hamilton and Mason quadrangles of south- 

 western Ohio. In June, 1914, he made a trip through some of the 

 Southern States, studying in detail the stratigraphy of certain Ter- 

 tiary formations and collecting fossil Bryozoa required for the com- 

 pletion of his monograph on this group. 



Under the direction of Mr. Frank Springer, Mr. Frederick Braun 

 engaged in extensive collecting work during the season of 1913 in 

 Illinois and adjoining States, with special reference to securing cri- 

 noids from the Chester division of the Mississippian. The results of 

 this exploration have enabled Mr. Springer to definitely correlate 

 certain upper Mississippian formations in various regions which have 

 hitherto been in doubt, and several excellent slabs of crinoids and 

 blastoids, invaluable for exhibition purposes, were obtained. 



During six weeks of July and August, 1913, Mr. Charles W. Gil- 

 more was detailed to the Geological Survey to enable him to collect 

 Upper Cretaceous vertebrate fossils in the Blackfeet Indian Reserva- 

 tion in northwestern Montana. Though the material obtained was 

 not extensive in amount, it included a very valuable series of dino- 

 saurian remains, none of which had previously been represented in 



