82 REPORT or NATIONAL MUSEUM, 1922. 



Mons formation. Collections were also made from the Lower Ozark- 

 ian and Upper Cambrian formations at various localities, but the 

 real work of the season was the tracing of the geographic distribu- 

 tion of the formations between the Bow Valley and the Divide pass- 

 ing over into the Athabasca drainage at Wilcox Pass, which is about 

 65 miles (104.6 kilometers) northwest of Lake Louise Station. 



Dr. E. S. Bassler spent his vacation in July, 1921, in geological 

 field work in the Central Basin of Tennessee, under the auspices of 

 the geological survey of that State. While mapping and studying 

 the economic resources of the Franklin quadrangle, in Williamson 

 County, south of Nashville, so many interesting collections of Pale- 

 ozoic fossils were made and so much stratigraphic data obtained 

 that arrangements were made for another summer's field work in 

 the same general area. During the greater part of June of the 

 current year, therefore, Doctor Bassler. in company with Dr. E. O. 

 Ulricli and R. D. Messier of the United States Geological Sur- 

 vey, was occupied in making stratigraphic sections and collecting 

 fossils over the entire Central Basin, an area of about 8,000 square 

 miles. The ultimate object of this work is the preparation of a 

 monograph on the stratigraphy and paleontology of Tennessee. On 

 the completion of his work in Tennessee, in 1921, Doctor Bassler 

 proceeded to Springfield, 111., where casts of type specimens in the 

 State museum collections were made in accordance with the depart- 

 ment's plan to complete so far as possible the representation of type 

 specimens in the national collections. 



Through the courtesy of E. J. Armstrong of Erie, Pa., Doctor 

 Bassler was enabled to visit all the classical Silurian and Devo- 

 nian localities in northwestern Pennsylvania and western New York 

 during the latter part of September. The object of this trip Avas 

 to obtain field knowledge of the detailed geology and to collect care- 

 fully selected sets of fossils illustrating the numerous formations of 

 the region. The work was highly successful, and the large collec- 

 tions of Devonian fossils in the Museum, concerning which exact 

 stratigraphic data have been lacking, can now be determined and 

 arranged in necessary detail. 



Dr. E. O. Ulrich, of the United States Geological Survey, spent 

 the summer of 1921 in continuation of his field researches on the 

 early Paleozoic rocks of eastern North America, and previous to 

 joining Doctor Bassler in Tennessee, as noted above, studied the 

 Silurian stratigraphy of Pennsylvania and Maryland. 



N. H, Boss made several short trips collecting in the Miocene 

 deposits along Chesapeake Bay, all of which were under the auspices 

 of the National Museum. These trips were unusually productive in 

 the recovery of well-preserved cetacean remains, as noted under the 

 accessions. 



