INDEX 



355 



Equatorial currents, 334 



Erosion, 59 



Erosion by glaciers, 113, 133 



by rivers, 53, 54 



by waves, 153 



by winds, 24 

 Erosion, conditions affecting rate of, 



73 



Eruptions, phenomena of, 169 

 Eskers, 126 



Europe, continental glaciers of, 131 

 Evaporation, 251 



and temperature, 253 



in United States, 254 



rate of, 253 

 Extinct lakes, 147 



Fahrenheit thermometer, 227 



Falls, 76, 77 



Fault, 190 



Fault-scarps, 190 



Fiords, 159 



Fissure eruptions, 178 



Floe-ice, 102 



Flood plain meanders, 87 



Flood plain of the Mississippi, 62 



Flood plains, 62 



Floods, 49 



Floods and alluvial plains, 92 



Flowing wells, 36 



Fluvio-glacial deposits, 125 



Foehn winds, 307 



Fog, 257 



Foraminiferal ooze, 349 



Forests, climatic effect of, 315 



Freezing and thawing, 25 



Frigid zones, 310 



Frost, 260 



Geysers, 35 

 Glacial drift, 121 



epochs, cause of, 132 



lakes, 134 



period, 129 



striae, 119 



Glaciation and drainage, 134, 137 

 Glaciation, effect on industries, 140 

 Glacier movement, nature of, 109 

 Glaciers, 15, 104 



deposition by, 134 



erosion by, 113, 133 



movement of, 108 



size of, 110 



types of, 104 



work of, 113 



Gorges, 73 

 Graham Island, 173 

 Great Lakes, 137, 144 

 Greenland, ice-cap of, 112 

 Ground moraine, 122, 127 

 Ground-water, 29, 30 



amount of, 30, 31 



descent of, 30 



movement of, 31 



source of, 29, 30 



surface of, 30, 70 



temperature of, 34 



work of, 37, 42 

 Gulf Stream, 336 

 Gullies, 52 



Hawaiian volcanoes, 167 



Heat from sun, distribution of, 229 



Heat lightning, 303 



Henry Mountains, 179 



Highs, 284 



High-pressure belts, 271 



Hogback, 80, 81 



Hot springs, 35 



Hot waves, 294 



Humidity, 255 



in United States, 256 



Ice in rivers, 102 



in soil, 102 



on lakes, 101 



on the sea, 102, 332 



wedge work of, 26 

 Icebergs, 112, 128 

 Ice-cap of Greenland, 112 

 Ice-caps, 104, 105, 111 

 Iceland, 179 

 Ice-packs, 102 

 Ice-sheet of Europe, 131 

 Ice-sheet of North America, 129, 130 

 Igneous phenomena not volcanic, 178 

 Immediate run-off, 30 

 Inclination of axis, 212 

 Insolation, 227 



and air movements, 272 

 Interior plains, 6, 9 

 Interlaken, 146 

 Intermediate zones, 310, 311 



climate of, 316 

 Intermittent lakes, 146 

 Intermittent streams, 52 

 Intrusions of lava, 179 

 Irrigation, 90 

 Isobaric gradient, 267 

 Isobaric maps, 264 



