iv BULL. GEOL. SOO. AM., VOL. 2. 



Page. 

 Stratigraphy of the Carboniferous in Iowa (with plates 9, 10) ; by C. R. Keyes__ 277 

 The Chazy Formation in the Champlain Valley (with plate 11) ; by Ezra 



Brainerd 293 



The Petrography and Structure of the Piedmont Plateau in Maryland (with 

 plate 12 and figures 1, 2) ; by G. H. Williams. With a supplement on 

 A Geological Section across the Piedmont Plateau in Maryland (with figures 



3-5); by C. R. Keyes 301 



Tertiary and Post-Tertiary Changes of the Atlantic and Pacific Coasts, With 

 a note on The Mutual Relations of Land-Elevation and Ice-Accumulation 



during the Quaternary Period (with figure 1) ; by Joseph Le Conte 323 



On the Lower Cambrian Age of the Stockbridge Limestone at Rutland, Vermont 



(with figures 1, 2); by J. E. Wolff 331 



Composition of certain Mesozoic Igneous Rocks of Virginia; by H. D. Camp- 

 bell and W. G. Brown 339 



The Cinnabar and Bozeman Coal Fields of Montana (with plate 13 and figures 



1,2); by W. H. Weed 349 



On the Recognition of the Angles of Crystals in Thin Sections (with plate 14) ; 



by A. C. Lane 365 



The Geology of Mount Diablo, California (with plate 15 and figures 1-3) ; by H. 

 W. Turner. With a supplement on The Chemistry of the Mount Diablo 



Rocks; by W. H. Melville 383 



Two Belts of fossiliferous Black Shale in the Triassic Formation of Connecticut 



(with figures 1-3) ; by W. M. Davis and S. W. Loper 415 



Mesozoic and Cenozoic Formations of Eastern Virginia and Maryland (with 



plate 16 and figure 1); by N. H. Darton 431 



On the Triassic of Massachusetts (with plate 17) ; by B. K. Emerson : 451 



Glacial Grooves at the Southern Margin of the Drift (with plate 18 and figure 1} ; 



by P. Max Foshay and R. R. Hice 457 



Post-Pleistocene Subsidence versus Glacial Dams (with plate 19) ; by J. W. 



Spencer 465 



On the Geology of Quebec and Environs (with plate 20) ; by H. M. Ami 477 



The Comanche Series of the Texas-Arkansas Region ; by R. T, Hill 503 



Carboniferous Fossils from Newfoundland (with plates 21, 22) ; by Sir J. Wil- 

 liam Dawson 529 



A proposed System of Chronologic Cartography on a Physiographic Basis, by 

 T. C. Chamberlin. With the Geological Dates of Origin of certain Topo- 

 graphic Features of the Atlantic Slope of the United States (with figures 1-6) ; 



by W. M. Davis .541 



Variations in the Cretaceous and Tertiary Strata of Alabama (with plate 23) ; 

 by D. W. Langdon, Jr 587 



