NO. 4 COOPERATIVE WORK OF THE INSTITUTION 21 



of the Appalachian Valley, long mapped as a single formation, was 

 undertaken by Dr. R. S. Bassler in 1905 in cooperation with the 

 Virginia Geological Survey, with the intention of discriminating the 

 stratigraphic units thought to be present in this hitherto undivided 

 series. After several seasons of close mapping and collecting of fos- 

 sils, a new geologic map of Virginia west of the Blue Ridge, and a 

 volume of 309 pages, fully illustrated, were published by the State. 



Cooperation zuith the Geological Survey of Maryland. — Coopera- 

 tive work with this organization has been actively carried on since 

 190 1, Dr. Bassler alone, or in collaboration with Dr. E. O. Ulrich, 

 having prepared a number of reports on the paleontology and strati- 

 graphy of the state. The results of their work have been published 

 in six of the reports issued by the Survey. The expenses of the work 

 were borne by the State, and the types of the described fossils became 

 the property of the National Museum. 



Geologic studies in Central Tennessee. — Cooperation with the State 

 Survey of Tennessee has resulted in two seasons of field work on 

 the part of Dr. R. S. Bassler in working out the stratigraphy of a 

 critical area — the Franklin quadrangle of 250 square miles just south 

 of Nashville. The results of this work will be published by the State 

 Survey. 



Cambrian Paleontology of Wisconsin. — Active work on the Cam- 

 brian faunas of Wisconsin in cooperation with the State Geological 

 Survey is now being carried on by Dr. C. E. Resser with the help and 

 advice of Secretary Walcott and Dr. E. O. Ulrich, both of whom 

 have made extensive collections in that state. The results of Dr. Res- 

 ser's work will be published by the State Survey, but the type speci- 

 mens will remain in the National Museum. 



Permian Paleontology of the Island of Timor.— In cooperation 

 with the Dutch government, Dr. Bassler has undertaken the study 

 of the fossil Bryozoa of the Island of Timor. 



Studies in Recent and Ceno::.oic Bryozoa. — By cooperation with 

 the Bureau of Fisheries, the Carnegie Institution of Washington, 

 and other organizations. Dr. Bassler, in collaboration with the lead- 

 ing bryozoologist of Europe, Ferdinand Canu, has engaged in exten- 

 sive studies on the Recent Bryozoa of the Philippine Islands ; the 

 Tertiary Bryozoa of North America; and the Cenozoic Bryozoa of 

 the West Indies and Central America. 



Cooperation with the Geological Survey of Canada. — Since 19 10 

 Secretary Walcott has been in cooperation with the Canadian Survev 

 in the study of the pre-Devonian stratigraphy and faunas of the 

 Rockv ^Mountains. 



