258 
SURVEYS. 
Geological and Topographical Surveys (continued) , 
Vol. 4. G-eology, by W. W. Mather, E. Emmons, L. Vanuxem, J. Hall. 
4 vols. 
„ 5. Agriculture, by E. Emmons. 5 vols. 
„ 6. Palaeontology, by J. Hall. 7 vols. 
PalaBontology. Illustrations of Devonian Fossils : Gaste- 
ropoda, Pteropoda, Cephalopoda, Crustacea and Corals of the 
Upper Helderberg, Hamilton and Chemung Groups. By James 
Hall. 4«. Albany, 1876. 
Published in advance of last 2 vols, of Part 6 above. 
Ohio, Geological Survey of Ohio. Report of Progress in 1870. 
By J. S. Newberry. 8«. Columbus, 1871. 
One Hundredth Meridian (Surveys West of). Annual Report 
upon the Geographical Explorations and Surveys West of the 
100th Meridian. By George M. Wheeler. Being Appendix 
LL of the Annual Report of the Chief of Engineers for 1875. 
80. Washington, 1875. 
Pennsylvania. Second Annual Report on the Geological Ex- 
ploration of the State of Pennsylvania. By Henry D. Rogers. 
8«. Harrisburg, 1838. 
The Geology of Pennsylvania ; a Government Survey, with 
a General View of the Geology of the United States, Essays on 
the Coal-Formation and its Fossils, and a Description of the 
Coal-Fields of North America and Great Britain. By Henry 
Darwin Rogers. 2 vols, in 3. 4^. Edinburgh, 1858. 
Maps. 4p. 
Uochy Mountains. U. S. Geographical and Geological Survey of 
the Rocky Mountain Region. J. W. Powell, in charge. 
Report on the Geology of the Henry Mountains. By G. 
K. Gilbert. 4«. Washington, 1877. 
Report on the Geology of the High Plateaus of Utah. By 
C. E. Dutton. 4«. Washington, 1880. 
Atlas. Folio. New York, 1879. 
Territories. U. S. Geological and Geographical Survey of the 
Territories. Annual Reports. By F. V. Hayden. 1-11. 1867- 
77. In 9 vols. 8°. Washington, 1873-79. 
First vol. 1867. Nebraska. 
1868. Wyoming. 
1869. Colorado and N. Mexico. 
Second vol. 1870. Wyoming. 
Third vol. 1871. Montana. 
Fourth vol. 1872. Montana, Idaho, Wyoming, Utah. 
Fifth vol. 1873. Colorado. 
Sixth vol. 1874.-] 
Seventh vol. 1875. I Colorado and Adjacent Territories. 
Eighth vol. 1876. J 
Ninth vol. 1877. Idaho and Wyoming. 
