INDEX. 



147 



Erosion by rivers, exceeds the filling up, 92. 



Erosion on Holyoke and Tom, 91. 



Erosion, facts detailed, 94. 



Erosion in the hypozoic rocks, 94. 



Erosion at Shelburne falls, 94. 



Erosions, in the Ghor and Orange, N. Hampshire, 

 96. 



Erosions at Bellows Falls, 98. 



Erosions at Brattleborough, Mettawampe, and Su- 

 gar Loaf, between Holyoke and Tom, 99. 



Erosions below Midclletown, on Conecticut river, 

 on Agawam river, 100. 



Erosions on Little river, in Russell, 101. 



Erosions on the Potomac : on the Hudson, 105. 



Erosions at High falls : at Trenton falls : on the 

 Ottaqueechy : on the Wisconsin : at the Gates 

 of the Rocky Mts., and on the Sutlej, in India, 

 106. 



Erosions at the Cow's Mouth, Himalaya Mts., and 

 on the Sierra Nevada, California, 101. 



Erosions on the Zaire, in Africa, 108. 



Erosion, valley of, in New Fane, Vt., 108. 



Erosions in metamorphic and Silurian rocks, 109. 



Erosions, gorge between Ontario and Niagara 

 falls : between Rochester and the lake, 109. 



Erosions between Portage and Mount Morris, 110. 



Erosions on Oak Orchard creek : on the Au Sable, 

 N. Y.: at the Delaware Water Gap: between 

 Port Jervis and Narrowsburg, 111. 



Erosions at the Grand Canon, on the Canadian, 

 112. 



Erosions at the Canon of Chelly, in New Mexico : 

 on Red river, in Texas, 113. 



Erosions at Hot Spring Gate : Rapids in St. 

 Louis river : Canon on Snake river : Gulfs of 

 Loraine and Redmond, N. Y.: on Cox river, 

 New South Wales : Kangaroo valley, in N. S. 

 Wales : gorge on the Rhine, between Coblentz 

 and Bingen, 114. 



Erosion, valley of, in Dorset, Vt., 115. 



Erosions on New river, Va. : on the Mississippi: 

 on the Rio Colorado, Big Canon : at the Dalles 

 of Wisconsin river, 116. 



Erosions in limestone, 117. 



Erosions at the natural bridges, in Va.: at Tren- 

 ton falls : at Glenn's falls : at St. Anthony's 

 falls : Canada of Mexico : Defile of Karzan : 

 Via Mala, 117. 



Erosions at Wady Barida, Anti-Lebanon : on Dog 

 river, Lebanon : on the Litany, Lebanon : on 

 the Euphrates : on the Ravendooz, in Koordis- 

 tan : on the Sheen, in do.: Wady el Jeib, Pales- 

 tine, 118. 



Erosions in unstratified rocks, 119. 



Erosions at the Devil's Gate, Rocky Mts.: at the 

 American falls, on Columbia river: at the Dalles, 

 on do.: at the Cascades, on do.: gorge on do. 

 near Wallah Wallah : on Pavilion river, Ore- 

 gon : at the Dalles of St. Croix river, Wisconsin : 

 on Pigeon river, in do.: Adirondac Pass, Essex 

 Co., N. Y: in the Ghaut Mts., India, 119. 



Erosions around Table Mt., S. Africa: near Natal, 

 S. Africa, 120. 



Erosions, how early commenced, 122. 



Erosions, their age, how determined, 123. 



Erosions, work of, interrupted and renewed, 123. 



Erosions, some of them beds of antediluvian rivers, 

 123. 



Erosions, some of intermediate age, 125. 



Erosions, proofs of intermediate age, 126. 



Erosions, most of them postdiluvian, 126. 



Erosions, circumstances affecting, 126. 



Erosions, not very different on different continents, 

 126. 



Erosions have nearly ceased on rivers without 

 cataracts, 126. 



Euphrates, natural bridges and erosions on, 118. 



Europe, surface geology of some parts, 34. 



Europe, no attempt to refer to its numerous ex- 

 plorers of surface geology, 34. 



F. 



Facts concerning terraces, 10. 

 Fleming, Prof., on boulder clay, 9. 

 Fort river, in Pelham, map of, 13. 

 Foster and Whitney's report, 31. 

 Friths in Sweden, Norway, and Maine ; the result 

 of erosions, 85. 



G. 



Gates of the Rocky Mts., 106. 



Genesee river, gorges upon, 109. 



Ghaut Mts., India, erosions in, 120. 



Ghor on Deerfield river, between Shelburne and 

 Conway, 18. 



Ghor on Deerfield river, named by the Geological 

 class, in Amherst College, 96. 



Ghor, in Palestine, 32. 



Glaciers, ancient, supposed traces of, in New Eng- 

 land, 3. 



Glaciers, ancient, in Wales and Switzerland, 65, 69, 

 132. 



Glaciers, ancient, in Wales, views of Prof. Ramsey 

 respecting, 132. 



Glaciers, ancient, in N. America, looked after in 

 the White Mts., 133. 



