ILLUSTRATIONS V 



Page 



Plate 7 — Wilson : Map and sections of Prince Edward county and bay of 



Quinte 230 



" 8 " District southeast of the Saint Lawrence outlet 236 



"9 " Saint Lawrence outlet '. . , 239 



" 10 " Preglacial drainage of area around northeast ^end of lake 



Ontario 241 



" 11 — White : Pottsville deposition in the Appalachian trough 267 



" 12 — Crook : Molybdenite-bearing vein in granite 286 



"13 " Molybdenite in quartz 287 



" 14 — Louderback : Index map of Nevada 289 



" 15 " Map of Humboldt region 294 



" 16 " Sections in the Humboldt region and Sierra Nevada.. 304 



" 17 " Volcanics of Humboldt Lake range 305 



" 18 " Volcanics of Humboldt Lake range and fault scarp in 



Star Peak range ; 322 



"19 " Views of Lone mountain , 327 



"20 " Views of Lone mountain 328 



"21 " Detailed section across the Humboldt region 346 



" 22 — Coleman : Map of lake Iroquois 347 



" 23 — Darton : Columnar sections 379 



" 24 " Deadwood sandstone and Minnekahta limestone 382 



" 25 Spearfish Red beds and overlying massive sandstone. ... 387 



"26 " Sundance and associated formations 388 



" 27 Typical alteration of thin limestone beds and shale 392 



" 28 Cambrian and Ordovician rocks on east slope of Bighorn 

 mountains, Johnson creek, northwest of Buffalo, Wyo- 

 ming 395 



" 29 Looking up Tongue river, Bighorn mountains, Wyoming. 396 



" 30 Natural bridge, La Prelle creek, southwest of Douglas, 



Wyoming 397 



" 31 Limestone layers near top of Chugwater red beds, north- 

 west of Buffalo, Wyoming 398 



" 32 Eastern slope of Rocky mountains and North Platte river. 403 



" 33 Gateway of Garden of the Gods and of Perry park 422 



"34 " Lower red beds and Dakota hogback, Colorado 430 



" 35 Columnar sections of carboniferous and red beds 437 



36 Columnar sections of Benton group 445 



" 37— Dryer : Western Finger Lake region 449 



" 38 Head of Honeoye valley and Hemlock lake 450 



"39 " Slopes of Hemlock lake and Canadice lake 453 



" 40 Honeoye valley and pitted surface of High point moraine. . 456 



" 41 Nortons delta and its pitted surface 457 



" 42 — Hitchcock: Geological section in the Ammonoosuc district, New 



Hampshire 464 



" 43 Ammonoosuc district, New Hampshire 479 



" 44 Dalmanites lunalus 482 



" 45 — Hobbs : Lineament map of Atlantic border region 483 



" 46 Drainage system of Connecticut .... 487 



" 47 Checkerboard topography 500 



