DABTON.I 



NORTH AMERICAN GEOLOGY. 



865 



Silurian — C ontinued. 

 Appaiachian — Continued. 



1840. Fourtli report of survey of the 



fourth district of New York, 

 Hall, J. 



Report of survey of Virginia 

 for 1839, Rogers, W. B. 



Equivalency of deposits on 

 east and west sides of the At- 

 lantic, Eaton. 



On the Silurian system, Con- 

 rad. 



Fourth report of survey of sec- 

 ond district of New York, 

 Emmons, E. 



1841. Report on paleontology of New 



York, Conrad. 



Mineral salt in Virginia, Tay- 

 lor, S. 



Fifth report of survey of iirst 

 district of New York, Mather. 



Fifth report of survey of the 

 second district of New York, 

 Emmons, E. 



Fifth report on survey of Penn- 

 sylvania, Rogers, H. D. 



Sketch of geology of North 

 America, Danbeny. 



Fifth report of survey of third 

 district of New York, Van- 

 nxem. 



Magnesian limestones of Penn- 

 sylvania, Rogers, R. E. 



Fifth report of fourth district 

 of New York, Hall, J. 



Report of survey of Virginia 

 for 1840, Rogers, W. B. 



Analogy of fossils iu Hudson 

 slate in eastern and western 

 New York, Mather, Vanuxem. 



1842. Notes on geology of the West- 



ern States, Hall, J. 



Geology of third district of 

 New York, Vanuxem. 



Topography, geology, and re- 

 sources of New York, Em- 

 mons, E. 



Geology of New York, second 

 district, Emmons, E. 



Mineralogy of New York, Beck. 



Structure of the Appalachians 

 and laws of mountains, 

 Rogers and Rogers. 



Silurian and Devonian of the 

 United States, Conrad. 

 Bull. 127 55 



Silurian — Continued. 

 Appai-achian— Continued . 



1843. Geology of western district of 



New York, Hall, J. 



Superposition of rocks of 

 Orange County, N. Y., Hor- 

 ton. 



Geology of New York, first dis- 

 trict, Mather. 



Structure of Berkshire and 

 vicinity, Rogers, H. D. 



Origin of mineral springs, Van- 

 uxem. 



Bituminous matter in New 

 York rocks. Beck, L. C. 



Elevations in Ohio with refer- 

 ence to geologic formations, 

 Whittlesey. 



Rock salt of the Holston, Vir- 

 ginia, Hayden, C. B. 



Distribution of fossils in the 

 older rocks. Hall, J. 



Connection of thermal springs 

 in Virginia with axes, Rogers, 

 W.B. 



Section from Cleveland to the 

 Mississippi and on identity 

 of western formations, Hall, 

 J. 



Mud furrows, wave lines, etc., 

 on New York rocks. Hall, J. 



Structure of Appalachians, ex- 

 emplifying laws of mountain 

 chains, Rogers and Rogers. 



1844. Paleozoics of Appalachians, 



Rogers and Rogers. 



Oolitic structiire of some lime- 

 stones, Rogers, W. B. 



American geology and condi- 

 tion of research in United 

 States, Rogers, H. D. 



Niagara Falls, their changes 

 and geology. Hall, J. 



Influence of survey of New 

 York, Hall, J. 



Seventh report of survey of 

 Tennessee, Troost. 



Geographic distribution of fos- 

 sils, Hall, J. 



Review of New York reports, 

 Owen, D. D. 



1845. Travels in North America, 



Lyell. 



1846. The New York system, Em- 



mons, E. 



