XVI LIST OF ILLUSTRATIONS. 



Facing page — 



Fig. 17. — View of Oblong Gej'ser, Upper Fire Hole Basin 372 



18. — Ornamented basins at Mammoth Hot Springs of Gardiner's RiTer 374 



19. — Rim of a Geyser in Upper Fire Hole Basin 374 



20.— Plan of Grotto Geyser 374 



21. — Globular masses in Tnrban Geyser 374 



22.— Diagram showing section of Great Geyser of Iceland and tempera- 

 ture measurements 376 



23. — Section of Saw-mill Geyser 380 



24. — Section of Beehive Geyser 380 



25. — Plan and section of Giantess Geyser 384 



26. — Geyser sections: 



a. Grand Geyser ^ 



&. Old Faithful 5 



27. — Geyser sections: 



&. Union Geyser ^ ^^^^ 



d. Trinity Geyser ) * 



28. — Section of Great Geyser of Iceland, illustrating McKenzie's theory 416 



29.— Artificial Geyser 420 



30. — Diagram illustrating Comstook's idea of geyser action 420 



31. — ^Diagram giving curves of temperature in Great Geyser of Iceland 422 



32. — Sections of Stroekr and Great Geyser of Iceland 424 



MAPS. 



[Figs. 3 and 4 are also maps.] 



Map of Yellowstone National Park showing distribution of hot springs 66 



Map of the "White Mountain or Mammoth Hot Springs on Gardiner's River 84 



Sketch of the Gibbon Geyser Basin 132 



Map of the Lower Geyser Basin of Fire Hole River 178 



Map of the Egeria Springs, Fire Hole River 186 



Map of the Upper Geyser Basin of Fire Hole River 240 



Map of the Shoshone Geyser Basin 278 



Sketch map of the hot springs on Witch Creek, near Heart Lake 290 



Map of the Rustic Geyser Group 300 



Map of the Southern Geyser areas of Iceland 304 



Map of New Zealand Geysers and Hot Spring areas 313 



TOPOGRAPHY. 



Accompanying Repokt of Henry Gannett. 



racing page- 

 Valley of the Yellowstone River 455 



Divide Lake, between East Fork and Pelican Creek 476 



Upper Falls of the Yellowstone 478 



Yellowstone Canon and Falls 470 



Crystal Falls 482 



Grand canon of the Yellowstone - 484 



Index and Pilot Peaks.- 486 



Return from an Elk Hunt 488 



