[2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 
pression and shearing have so changed the character of the rock that 
it is impossible to obtain fossils in a condition to be of service. 
The collections of 1913 contain a number of very important addi- 
tions to this ancient Cambrian fauna, and many fine additional ex- 
amples of species found in 1012. 
Fic 14.—Bowlder train on the surface of the west side of Hunga Glacier, 
overlooking the Robson Pass, British Columbia. The Secretary of the Smith- 
sonian Institution is standing beside the bowlder. Photograph by Miss Helen 
B. Walcott, 1913. 
GEOLOGIC HISTORY OF THE APPALACHIAN VALLEY IN 
MARYLAND 
Dr. R. S. Bassler, curator of paleontology in the U. S. National 
Museum, spent a month during the summer of 1913, in the Appalach- 
ian Valley of Maryland and the adjoining States, studying the 
Postpaleozoic geologic history of the region, as indicated by the 
present surface features. His studies, which were under the joint 
auspices of the U.S. National Museum and the Maryland Geological 
Survey, were in continuation of work carried on during the previous 
summer when the sedimentary rocks of the region were mapped in 
detail, the final object being the preparation of a report on the Lower 
