NORTH AMERICAN GEOLOGY. 



533 



Juratrias — Continued. 

 Massachusetts to North Carolina— 

 Continued. 



1847. Plants from coal iields near 



Eiohmond, Bumbury. 



Fossil tree at Bristol, Conn., 

 Silliman, B., jr. 



Trap tuff of Connecticut Val- 

 ley, Hitclicock, E. 



Illustrations of fossil foot- 

 marks, Deane. 



Coal fieldnear Richmond, Lyell. 



Structure of Eichmond coal, 

 Hooker, I. T. 



1848. Geology of South Carolina, 



Tuoney. 



1849. Bassin du comt6 de Chester- 



field, Virginie, Marcou, J. 

 Second visit to the United 

 States, Lyell. 



1851. Age of Connecticut Valley 



sandstone, Wells, Agassiz. 



Age of red sandstone of the 

 United States, Jackson, C.T. 



Fossil rain marks, Lyell. 



Fossil calamite from Bridge- 

 water, Mass., Jackson, C. T. 



Date of red sandstones of New 

 Jersey and the Connecticut, 

 Eedfield. 



Coal of central North Carolina, 

 Johnson, W. E. 



Age of new red sandstone, 

 Agassiz, L. 



Fossil from conglomerate of 

 Pennsylvania, Lea. 



Age of Newark areas, Foster. 



Eain marks in sandstone of New 

 Jersey and Connecticut Val- 

 ley, Eedfield. 



Analysis of red marl at Spring- 

 field, Mass., Jackson, C. T. 



Altered shales from New Hope, 

 Pa., Eogers, H. D. 



1852. Eeport of geological survey of 



North Carolina, Emmons, E. 

 Origin of stratification, Wells, 



D.A. 

 Deep Eiver coal field region, 



McLenahan. 



1853. Age of Deep River coal, Eogers, 



W.B.; Jackson, C.T. 

 Wheatley, Brookdale, and 

 Charleston mines. Pa., Eog- 

 ers, H. D. 



Juratrlas — Continued. 

 Massachusetts to Noeth Carolina — 

 Continued. 



1853. Geologic map of United States, 



etc., Marcou, J. 

 Cuivre et houillo de la Caroline 

 du Nord, etc., Jackson, C. T. 



1854. Fossil saurian of New Red sand- 



stone of Pennsylvania, Lea. 



Deep Eiver coal region, Jack- 

 son, C. T. 



Footprints, sandstones, and 

 traps of Connecticut Valley, 

 Hitchcock, E. 



Origin of stratification. Wells, 

 D.A. 



1855. Movements in quarries at Port- 



land, Conn., Johnson, J. 



Impressions on clay in Hadley, 

 Mass., Hitchcock, C. H. 



Copper mine at Bristol, Conn., 

 Silliman, Whitney, J. D. 



New clathropteris in Connecti- 

 cut Valley, Hitchcock, E., jr. 



Mineralreiohthum der Verei- 

 nigten Staaten, Diffenbach. 



Ueber die Geologic von Nord- 

 Amerika, Marcou, J. 



1856. Eeport of survey of South Caro- 



lina for 1856, Lieber. ; 



Notes on Berks County, Pa., 

 Bertlet. 



Eeport of midland counties of 

 North Carolina, Emmons, E. 



Age of coal rocks near Eich- 

 mond and in North Carolina, 

 Eogers, W. B. 



Influences of trap on adjacent 

 strata, Eogers, W. B. 



Section across Connecticut Val- 

 ley, Hitchcock, E. 



Eolations of New Eed to coal 

 rocks of eastern Virginia and 

 North Carolina, Eogers,W. B. 



Carbonate of iron in coal meas- 

 ures and in color of rocks, 

 Eogers, H. D. 



Age of Trias, of eastern United 

 States, Jackson, C. T. 



Eeport on northern New Jer- 

 sey, Kitchell. 



Natural coke near Eichmond, 

 Eogers, W. B. 



Posidonomya in Virginia, Eog- 

 ers, W. B. 



