NORTH AMERICAN GEOLOGY. 



617 



Massachusetts — C ont i nued . 



1852. Terraces since the drift period 



along the Couneoticut Valley, 

 Hitchcock, E. 



Geology of southern Essex Coun- 

 ty, Prescott. 



Post-Pliocene of Southern and 

 Northern States, Desor. 



Age of clay slate of Connecticut 

 Valley, Hitchcock, E. 



1853. Coal field of Bristol County, etc., 



Hitchcock, E. 



Geologic map of United States, 

 etc., Marcou, .T. 



Report ou certain points in geol- 

 ogy, Hitchcock, E. 



1854. Drift of eastern Massachusetts, 



Desor. 



Origin of coarse drift near Bos- 

 ton, Desor. 



Footprints, sandstones, and traps 

 of Connecticut Valley, Hitch- 

 cock, E. 



Syenite of Nahant, Jackson, C. T. 



Drift-filled scratches at East 

 Boston, Stodder. 



Some crystalline limestones of 

 North America, Hunt, T. S. 



Fossils in post-Pliocene in Chel- 

 sea, Stlmpson. 



1855. Ueher die Geologic von Nord- 



Amcrika, Marcou, .1. 



New Clathropteris in Connec- 

 ticut Valley, Hitchcock, E., jr. 



Impressions in clay at Hadley, 

 Hitchcock, C. H. 



American geology, Emmons, E. 



1856. Serpentine marhles, Jackson, 



C.T. 



Large bowlder at Amherst, Hitch- 

 cook, E. 



Section across sandstone and trap 

 of Connecticut Valley, Hitch- 

 cock, E. 



Relations of New Red to coal 

 rocks of eastern Virginia and 

 North Carolina, Rogers, W. B. 



Bowlders between Salem and 

 Danvers, Pickering. 



Paleozoic fossils in eastern Massa- 

 chusetts, Rogers, W. B. 



Syenite in South Danvers, 

 Nichols. 



American geologic history, Dana, 

 J.D. 



Massachusetts — Continued. 



1856. Age of altered rocks of eastern 



Massachusetts, Rogers, W. B. 



1857. Age of Connecticut Valley sand- 



stones, Wells, Agassiz, L. 

 Illustrations of surface geology, 

 Hitchcock, E. 



1858. Glacial phenomena in Canada 



and the United States, Ramsay. 



Geology of North America, Mar- 

 cou, J. 



Sketch of geology of United 

 States, Rogers, H. D. 



Ichnology of New England, 

 Hitchcock, E. 



Trilobite formation at Braintree, 

 Lea, I. 



1859. Braintree argillites, Jackson, 



C.T. 



Saline matters in rocks in eastern 

 Massachusetts, Hayes, A. A. 



Trilobites from Braintree, Rogers, 

 W.B. 



Catalogue of State cabinet and 

 notes on metamorphlcs, Hitch- 

 cock, E. 



On anticlinal flexures in Massa- 

 chusetts, Rogers, H. D. 



Slates of Governors Island, 

 Rogers, W. B. 



Paleontology of New York, vol- 

 ume 3, Hall, J. 



Sandstone and trap at Hadley 

 and Amherst, Stodder. 



Analysis of slate from Somer- 

 ville, Dornbach. 



Red sandstones on crystallines at 

 Northfield, Jackson, C. T. 



Section from Greenfield to Charle- 

 mont, Hitchcock, E. 



Cement of Roxbury conglomerate, 

 Hayes, A. A. 



Age of Trias of Massachusetts, 

 Am. Jour. Sci. 



1860. Wheatly silver-lead mine, Blake. 

 So-called talcose schist of Ver- 

 mont, Hitchcock, C. H. 



Sodalite and elseolitefrom Salem, 

 Kimball. 



Ancient glaciers on Green Moun- 

 tains, Hitchcock, E. 



Cretaceous at Gay Head, Stlmp- 

 son. 



1861. Fossiliferous pebbles in conglom- 



erate near Fall River, Rogers, 

 W.B. 



