DAhTON.] 



NORTH AMERICAN GEOLOGY. 



431 



Geologic Philosophy — Continued. 

 Skdtmentation — Continued. 



1886. The North Atlantic as a geolog- 



ical basin, Reade, T. M. 

 Origin of Pottsviile and other 

 conglomerate, Branner. 



1887. Montgomery County, Ky., Lin- 



ney. 



1888. Genesis of Boston Basin, Bouve. 

 Origin of loess, Newberry. 

 Origins of divisions between 



strata, Shaler. 

 Determination of age of rock 

 deposits, Heilprin. 



1889. Origin of loess, Campbell, J. T. 

 Subaerial deposits of arid re- 

 gions, Russell, I. C. 



1890. Sand transportation by rivers, 



Graham. 



Markings in Paleozoic rocks, 

 Dawson, J. W. 



Southern extension of Appo- 

 mattox formation, McGee. 



Lake Bonneville, Gilbert. 



1891. Cycles of sedimentation, Wil- 



liams, J. L. 

 Beach phenomena. New Bruns- 

 wick, Whittle. 

 Fresh-water morasses, Shaler. 

 Relations of secular rock dis- 

 integration to transitional 

 schists, Pumpelly. 

 Geological work of mosses and 



algsB, Weed. 

 Gravel accumulation in arid re- 

 gions, Gilbert. 

 Geomorphy. 

 1818. Origin of prairies, Wells, R. W. 

 1823. On changes in geology of North 

 America east of Stoney Moun- 

 tains, Maclure. 

 1830. Diluvial furrows and scratches, 



Thomas, D. 

 1838. Report on Massachusetts, 



Hitchcock, E. 

 1842. Elements of geology and out- 

 line of geology of North Caro- 

 lina, Mitchell, E. 

 1847. Ancient sea margins, Chambers. 



1849. Ancient sea margins. Chambers, 



Dana, J. D. 



1850. Origin of drift and terraces of 



aqueous action, Rogers, H. D. 

 Terraces of Connecticut Valley, 

 Hitchcock, E. 



Geologic Philosophy — Continued. 

 Geomorphy— Continued. 



1851. Terraces and beaches in Con- 



necticut Valley, Hitchcock, 

 E. 

 Coal formation, especially in 

 Pennsylvania, Rogers, H. D. 



1852. Terraces since the drift period 



alongthe Connecticut Valley, 

 Hitchcock, E. 



1857. Illustrations of surface geology, 



Hitchcock, E. 

 Report in counties of Greenup, 

 Carter, Lawrence, and Han- 

 cock, Ky., Lyon. 



1858. Classification of several types 



of orographic structure, Rog- 

 ers, H. D. 



1859. Instances of reversed drainage, 



Lesley, J. P. 



1860. Botany and paleontology of 



survey of Arkansas, Lesque- 

 reux. 

 Relation of terraces of southern 

 Ohio and drift theories, An- 

 drews. 



1861. Appalachian Mountain system, 



Guyot. 



1865. Production and preservation of 



lakes by ice action, Belt, T. 



Origin of prairies in Mississippi 

 Valley, Winchell, A. 



Lignite of Franklin County and 

 geology of southeastern Penn- 

 sylvania, Lesley, J. P. 



Origin of prairies, Lesquereux, 

 Dana, J. D. 



1866. Excavated lake basins of New 



England, Shaler. 



Origin of the prairies, Lesque- 

 reux. 



Physical features, gesneral prin- 

 ciples, surface geology of Illi- 

 nois, Worthen. 



1867. Report of geological survey for 



1866, Kerr. 



1869. Report of geological survey of 

 North Carolina for 1869, Kerr. 

 Lakes of Iowa, past and pres- 

 ent. White, C. A. 



1871. Note on river terraces, Dana, 

 J. D. 

 Surface geology of Great Lakes 

 and Mississippi VaUey, New- 

 berry. 



