REPORT OF NATIONAL MUSEUM, 1911. 53 



much time was spent in repairing damages occasioned by the moving. 

 Among the lesser though interesting mounts that have been installed 

 may be mentioned the skull and antlers of an Alee gigatitea, two 

 mammoth tusks, 10 specimens of fishes, and several turtles. Work 

 on a complete composite skeleton of Teleoceras fossiger, a short-legged 

 rhinoceros, is well under way. 



The exhibition of fossil invertebrates has been planned on a much 

 more comprehensive scale than before, and good progress was made 

 in bringing together and preparing the material. Not more than 

 two-thirds of the specimens shown in the old building will be utilized, 

 but to this nucleus much that is new and attractive will be added, and 

 it is hoped that the work can be completed before the end of the 

 calendar year 1911. The exhibition collection of paleobotany was 

 still in the old building, awaiting the completion of cases which have 

 been ordered for it. 



Researclies. — On account of the amount of work involved in the 

 moving, the extent of original investigations by members of the 

 staff was much curtailed. Dr. George P. Merrill, head curator of 

 the department, completed a paper on the origin of the sporadic 

 glasses known under the names of moldavite, billitonite, etc., and 

 has conducted studies on the composition of meteorites, under a grant 

 from the National Academy of Sciences. Dr. J. E. Pogue, assistant 

 curator of mineralogy, continued the preparation of his treatise on 

 the turquoise, and conducted petrographic researches on ottrelite 

 schists. The descriptions of calamine crystals, a phlogopite-biotite 

 intergrowth and pseudomorphs of marcasite after pyrrhotite, men- 

 tioned in the last report, were finished and published. 



Dr. Charles D. Walcott, Secretary of the Institution, continued 

 his investigations on Cambrian fossils mainly obtained during his 

 own explorations in the Rocky Mountain region of the Northwest, 

 during which some remarkable paleontological discoveries were made. 

 Papers on the eurypterid crustaceans, the medusa? and the holo- 

 thurians from this formation were issued during the year, while 

 contributions on the annelids, sponges, and certain groups of crusta- 

 ceans were in course of preparation. Dr. R. S. Bassler, curator of 

 paleontology, submitted for publication his extensive bulletin on the 

 Bryozoan faunas of the Baltic Provinces, which is now in press. He 

 also described a new genus of tubuliporoid Bryozoa, and completed 

 papers on stratigraphical and paleontological studies of the Waver- 

 lyan rocks of Tennessee, and the geologic section of a deep well at 

 Waverly, Ohio. Dr. William H. Dall, associate curator, reported in- 

 vestigations in progress on the Tertiary faunas of the Canal Zone, 

 the Pacific coast of North America, the gold-bearing gravels of 

 Alaska, and the Silex beds of Tampa, Florida. Mr. L. D. Burling, 

 assistant curator of invertebrate paleontology, was mainly occupied 



