Other Illustrations

FIG.		PAGE
1.	Relief map of North America	ii
2.	Profile of a continental shelf	2
3.	Map of Gulf of Mexico and the Caribbean region, showing topography of the sea-floor	17
4.	Co-tidal lines	29
5.	Profile of sea-cliff and cut-and-built terrace	33
6.	Map of a portion of the Atlantic coast of the United States	35
7.	Map of Mobile Bay	36
8.	Map of Cape Cod	37
9.	Map of the coast of Texas	39
10.	Map of a portion of the coast of Maine	45
11.	Map of the coast of southeastern Alaska	47
12.	Map of the delta of the Mississippi	53
13.	Map giving the names of the larger physiographic divisions of North America	61
14.	Altitude map of North America	65
15.	Map of the Appalachian Mountains	74
16.	Section of anticlinal valleys and synclinal mountains	78
17.	Profile showing relation of ancient peneplains in the Appalachians	81
18.	Section through the Black Hills of Dakota	117
19.	Sketch of the Grand Cañon of the Colorado River	134
20.	Map of the Great Basin	137
21.	Map of Crater Lake, Oregon	153
22.	Mount Rainier, Washington	154
23.	Map of Puget Sound	161
24.	Map showing isobars for January and July	175
25.	Ice-palace, Montreal	199
26.	Map showing tracks of West Indian hurricanes	209
27.	Map showing depth of evaporation in the United States	212
28.	Map showing distribution of forests	215
29.	Douglas firs, Vancouver	241
30.	View in redwood forest of California, from photograph by U. S. Bureau of Forestry	242
31.	Bison at Silver Heights, Winnipeg	275
32.	Map showing range of bison	276
33.	Maps showing the growth of the North American continent	303
34.	Map showing the distribution of coal-fields	336
35.	Ideal section through an oil and gas pool beneath an anticlinal	339
36.	Lodge or tepee of Blackfoot Indians, Manitoba	387
37.	Panorama of Uxmal, Yucatan	390
38.	Pointed arches in Central American ruins	393
39.	Carved stonework, Uxmal, Yucatan	394

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