ILLUSTRATIONS. VI 1 



Page 

 Bayley : Figure 1 — Map showing 1 Ustribution of Eleolite-Syenite in the Towns 



of Litchfield and West Gardiner, Maine 233 



" " 2 — Occurrence of Nepheline and Sodalite in Feldspar 248 



" " 3— Eleolite-Syenite from Red Hill 248 



Weed: Figure 1 — Sketch Map of Montana showing Location of Coal Fields. . 302 

 " 2— Section at Belt Butte 306 



3 " on Belt Creek 307 



4 " " Sand Coulee 313 



a 



a 



" 5 " at Sandcoulee 314 



" " 6 — Sections revealed by Drilling at Sandcoulee 315 



" " 7 — Section of Sandcoulee Coal Seam 316 



8 " near Belt Creek 319 



" .9 " in Belt Field 310 



" "11 1— Sections of C< >al Seams of the Great Falls Field 320 



11— Section at Watson Mine 321 



" 12 " " Armington 321 



13— ( oal Seams of Red Lodge Mines 327 



Hall and Sardeson : Figure 1— Fault in the Magnesian near Hastings, Minne- 

 sota 344 



" " 2 — Unconformity of the Saint Peter on the Mag- 



nesian and the Conformity of the Trenton 



on the Saint Peter 35 



5 



" " 3 — Minor Faults and Color Markings of the Saint 



Peter Sandstone at south Saint Paul ...... 354 



" " 4 — Diagramatic Sketch showing the Relations of 



the Magnesian, Saint Peter and Trenton. . . 355 



" " 5 — Classification of the Lower Silurian 359 



" " 6 — Lenticular Segregations of Fossils in the Blue 



Limestone, Minneapolis 360 



" " 7 — Lenticular Segregations of Fossils mtheSticto- 



pora Bed, Saint Paul 362 



DlLI/ER: Figure 1— < ieneral Section through the Tayloiville Region 377 



" " 2 — Section of Genesee Valley near Robinson's 378 



" 3-^Tura-Trias Unconformity 380 



" " 4 — Section on northeastern Slope of Grizzly Mountain 381 



" " 5— Eastern Slope of Mount Jura 385 



" " 6 — Section through Mount Jura 385 



" 7 " near Indian village 385 



" " s " " Donnerwirth's 385 



9— Northeastern Slope of Grizzly Mountain 390 



Proceedings (Columbus): Figure 1 — Section uearGreal Barrington 461 



ti a a 9 " " « " 4lll 



" " " 3 — Cleavage and Bedding near Great Bar- 

 rington 462 



" " " 4 — Structure of Hopkins-Searles Quarry 462 



" " " 5 — Section through Rutland-Danby Ridge. . . 516 



" " " 6 — Structure of Hyolithes Limestone 517 



" " 7— General Section on the 103d Meridian. .. 521 

 (17 plates, 72 figures.) 



