XVI 



GEOLOGICAL SURVEY OF WISCONSIN. 



PLATE. Page. 



VI A. Topographical Map of Milwaukee County, .-.._.- Opp. 127 

 VII. Diagram showing Glacial Movements in Eastern Wisconsin, - Opp. 204 

 VIII. Profile Section of Quaternary Formations along Lake Michigan, Opp. 219 

 IX. Map showing Outline of Eastern Wisconsin during the Cham- 

 plain period, --------- Opp. 223 



XL Topographical map of Iron Eidge Mining Property, Opp. 328 



XII. Profile Sections showing the Subdivisions of the Niagara Group, . Opp. 336 



XIII. Profile Section through Artesian Wells at Western Union Junc- 



tion, Milwaukee and Sheboygan, Opp. 335 



XIII A. View of Milwaukee cement quarry, Opp. 395 



XIV. View of Roche a Cris Bluff, Potsdam sandstone, Opp. 525 

 XV. Archaean. View of Devil's Lake and Kirk's Bluff, - - - Opp. 407 



XVI. Map of Centra] Wisconsin, showing the Hydrographic Basins and 



principal Topographical Subdivisions, Opp. 453 



XVII. Map showing the formations along Black river, Jackson county, Opp. 493 



XVIII. Map of Isolated Archaean Areas, Opp. 501 



XIX. Maps and Cross Sections illustrating the Structure of the Devil's 



Lake Gorge, - Opp. 507 



XX. Cross Sections in Sauk county, Opp. 590 



XXII. East and West Sections in Columbia county, - ... Opp. 579 



XXIII. North and South Sections in Columbia county, , - - Opp. 581 



XXIV. North and South Sections in Dane county, .... Qpp. 597 

 XXV. East and West Sections in Dane county, - Opp. 600 



XXV A. Map of part of Wisconsin, showing glacial Drift and other Quat- 

 ernary formations, - Opp. 608 



XXVI A. Geological map of the Four Lake Country of Dane county, show- 

 ing the Directions and Effects of the Glacial Movements, - Opp. 613 

 XXVI. View of bluff of Galena limestone near Cassville, on the Missis- 

 sippi, Opp. 643 

 XXVII. Outline map of the Lead region, exhibiting the Drainage and the 



Distribution of Prairie and Forest Opp. 652 



XXII. Map of Hendy, Davey, Sobey & Co.'s mine, , Opp. 731 

 XXIX. Section through the Mining Districts of Beetown, Potosi and Fair- 

 play, from the mouth of the Mississippi to the State Line, show- 

 ing the Denudation, Opp. 667 



XXX. Map of Linden mine, * - Opp. 726 



XXX A. View of Bluffs on the Mississippi, Opp, 689 

 XXXI. Section through the Mining Districts of Hazel Green, Benton and 

 Mineral Point, from the State Line to the Wisconsin river, 

 showing Denudation, Opp. 668 

 XXXII. Outline map of the Lead region, showing the several Mining Dis- 

 tricts and the Furnaces, - - - - - - - Opp. 742 



FIGURES. 



REPORT ON EASTERN WISCONSIN. 



1. Geological Relations of Green Bay Valley, 



2. Striated Cone of Limestone, Pewaukee, 



3. Trains of Bowlders from Portland and Waterloo Quartzite Outliers, 



4. Peculiar Glacial Phenomena at Burlington, .... 



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