II. Mean annual rainfall and temperature 173 III. Climate and life provinces 185 IV. Leading geological features 306 V. Pleistocene glacial deposits 315 VI. Linguistic stocks of Indians North of Mexico 370 VII. Distribution of governments 410 VIII. Characteristic vegetation 418

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