ILLUSTRATIONS 



IX 



Taylor : 



Figure 3- 

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 5- 



GOLDTHWAITE : 



Figure 1- 

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 Oleland : 



Figure 1- 

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11 



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Martin : 





Figure 



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9— 



Branner : 



Figure 1- 



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 5- 



Page 



-Alaska 203 



-Greenland and the Arctic archipelago 206 



-Diagram of Greenland rifts 207 



-The landsphere 209 



-The world on Mercator's projection 211 



-East Indian archipelago 215 



-Map of Lakes Algonquin and Iroquois 230 



-Map of Lake Algonquin 230 



-Diagram indicating origin of rock bridges 315 



-Pont d'Arc ( Ardeche) 316 



-Diagram showing origin of the Caroline natural bridge,Utah. 318 



-Diagram showing origin of the Edwin bridge, Utah 319 



-Maps showing location of present and former channel of the 



AVashita River, Oklahoma (after Gould) 320 



-Diagram of the natural bridge across Kicking Horse River. . 322 

 -Map indicating formation of natural bridge in Powell County, 



Kentucky, by the headward cutting of two streams in a 



plateau region 325 



-Diagram indicating formation of bridges from the "Remains 



of a great caverij' ' 330 



-Section of Perch River natural bridge 330 



-Diagram to show how a natural bridge may be formed by 



gravity 333 



-The "Rebloch" at Schangnau, in the valley of the Emme, 



Switzerland 334 



-Diagrammatic cross-section across Pine Creek, Arizona 335 



-Area shaken by five great earthquakes in North America. . . 342 



-Map of Alaska (after Brooks) 343 



-Map of part of Alaska 347 



-Map of part of Alaska 357 



-Faults, uplifts, and depressions of Yakutat Bay 360 



-The harbor of Yakutat village 363 



-Earthquake diagram 375 



-INIap showing seismograph stations 383 



Habitual epicenters in Aleutian Islands and Bering Sea (after 



de Montessus de Ballore) 397 



-Ant-hills on Rio L^tinga, near the village of Pegas, State of 

 Bahia .' 466 



-Ant-hill (Formiga de mandioca) near Mundo Novo, State of 

 Bahia, Brazil 467 



-Ant-hills made by the "Formiga de mandioca," near Ven- 

 tura, State of Bahia, Brazil 468 



-Nest of leaf-cutting ant , 472 



-Above-ground structure of white ants 480 



-Mound of termites or white ants, State of Minas Geraes, 

 Brazil 481 



-White ants' nest built of earth, in the State of Minas Geraes. 483 



