BABTON.] 



NOETH AMERICAN GEOLOGY. 



53 



Archean and Algonkian — Continued. 

 Grbat Lake Eegion — Continued. 



1876. Kaolin in Wisconsin, Irving, 



K.D. 



Geology of Lake Superior iron 

 district, Wright, C. E. 



Cornwall iron mine and re- 

 lated deposits. Hunt, T. S. 



Huronian rocks south of Lake 

 Superior, Brooks. 



1877. Kupferbergbau am Obern-See, 



Mosler. 



Cupriferous conglomerates of 

 Lake Superior, Egleston. 



Report on central and western 

 Wisconsin, Irving, E. D. 



Age of crystallines of Wiscon- 

 sin, Irving, R. D. 



Report of Wisconsin survey for 

 1875, Wright. 



Geology of eastern Pennsyl- 

 vania, Hunt, T. S. 



Report of Wisconsin survey, 

 1873-74, Lapham, I. H. 



Pipestone of Devils Lake, 

 Woodman. 



North shore of Lake Supe- 

 rior, Courtis. 



AUouez mine. Lake Superior, 

 Eolker. 



Geology of central Wisconsin, 

 Irving, R. D. 



Geognostische Beobachtungen 

 in Minnesota, Kloos. 



Geology of eastern Wisconsin, 

 Chamberlin, T. C. 



Lithology Wisconsin survey, 

 Wright, C. E. 



Work in Menominee district, 

 Wright, G. E. 



Metasomatio development of 

 copper rocks of Lake Supe- 

 rior, Pumpelly. 



Krystallinischen Gestein von 

 Minnesota, Strengand Kloos. 



1878. Work in Penokee iron range, 



Irving, R. D. 



Copper series of Upper St. 

 Croix River, Chamberlin, T. C . 



Geology of Morrison County, 

 Minn., Winchfell, N. H. 



Report on Bayfield and Doug- 

 las counties, Wis., Sweet. 



Pine River iron district, Oconto 

 County, Wis., Wright, C. E. 



Archean and Algonkian — Continued. 

 Great Lake Region — Continued. 

 1878. Work in east portion of Peno- 

 kee iron range, Chamberlin, 

 T. C. 



Work in north central Wiscon- 

 sin, Clark, A. C. 



Leading geologic areas of Can- 

 ada, Chapman. 



North of Lake Huron and east 

 of Lake Superior, Bell, R. 



Nipigon or copper rocks of 

 Lake Superior, Spencer, J. W. 



Country between Lake Winni- 

 peg and Hudson Bay, Bell, R. 



Reconnaissances in Wright and 

 Rice counties, Minn., Win- 

 chell, N. H. 

 1879; Macfarlane's Geological Rail- 

 road Guide, Wisconsin, Cham- 

 berlin, Irving and Strong. 



Field report on Lake Superior 

 region. Hall, C. W. 



Report of commissioner of min- 

 eral statistics of Michigan, 

 Wright, C. E. 



Stratigraphy of Huronian in 

 northern Wisconsin, Irving, 

 R.D. 



Macfarlane's Geological Rail- 

 road Guide, Hunt, T. S. 



Survey of Minnesota of 1878, 

 Winchell, N. H. 



Macfarlane's Geological Rail- 

 road Guide to Minnesota, 

 Winchell, N. H. 

 Macfarlane's Geological Rail- 

 road Guide to Michigan, 

 Winchell, A. 



Michigan, condensed popular 

 sketch, Winchell, A. 



Microscopic study of Huronian 

 olay slate, Wichmann. 

 1880. Cupriferous series of Diiluth, 

 Wincheli, N. H. 

 Comparisons of iron and associ- 

 ated rocks of Marquette 

 region, Hnnt, T. S. 



Microscopy of iron rocks from 

 south of Lake Superior, 

 Wichmann. 



Laurentian of Michigan, Cham- 

 berlin, T. C. 



Lithology of Keweenawan sys- 

 tem, Pumpelly. 



