VI BULL. GEOL. SOC. AM., VOL. 2. 



Page. 

 Plate 6— Willis: Copy of Graphic Feld Notes , 188 



" 7 — Becker : Mortar and Pestle from Auriferous Gravels, California 189 



" 8- — WiNSLOW : Geotectonic and Topographic Map of a Portion of Western 



Arkansas 242 



" 9 — Keyes : Coal Measures of central Iowa 277 



" 10 " Upper and lower Limits of the Redrock Sandstone (8 figures) 287 



" 11— BrA-INERd : Sections of the Chazy in the Champlain Yalley 293 



" 12— Williams : Piedmont Plateau in Maryland 301 



" 13 — Weed : Sections at Cinnabar and Cokedale, Montana (2 figures) 364 



" 14 — Lane : Diagrams used in identifying Mineral Crystals (7 figures) 382 



" 15 — Turner: Geologic Map of the Vicinity of Mount Diablo, California. 383 

 " 16 — Dakton : Preliminary Geologic Map of eastern Virginia and Mary- 

 land 431 



" 17 — Emerson: Map of the Triassic in Massachusetts , 451 



" 18 — Foshay and Hice : Glaciated Surfaces near the Drift Margin, Rock 



Point, Pa, (2 figures) 457 



" 19 — Spencer: Map of Deserted Beaches 465 



" 20 — Ami : Sketch Sections in the Vicinity of Quebec City, Canada (7 



figures) 500 



" 21 — Dawson: Fossil Plants from Newfoundland and New Brunswick (4 



figures) 540 



" 22 " Fossil Plants from New Brunswick (4 figures) 540 



" 23 — Langdon : General Sections exposed on Alabama Rivers 606 



Proceedings (Indianapolis) : Figure 1 — Overflowed Areas and Crevasses of the 



lower Mississippi 21 



" " " 2 — Stereogram of a Portion of the Surface 



of Custer County, Nebraska 27 



Becker : Figure 1 — Plan of vertical Prism 55 



" " 2— Cube subjected to Thrust 56 



" 3— Analysis of a Thrust 57 



" " 4 — Analysis of a Shear 58 



" " 5 — Sectional Elevation of Prism 60 



" " 6 — Erosion by modern Rivers 65 



" " 7— Lava-capped' Hill and bare Hill 66 



" " 8— Weathered End of Prism 69 



" " 9 — Disturbance of terrestrial Equilibrium 70 



" " 10— Experiment on Subsidence 71 



" " 11— Result of Experiment 72 



" " 12 — Analysis of Upheaval and Subsidence 73 



" " 13 — Forces involved in Upheaval and Subsidence 74 



