INDEX. 



451 



Conglomerate, Great, on Porcupine Mountains, 209, 217, 219. 



Portage Lake, 101,192. 



— , Thickness of, 177, 182, 186. 

 — , Inner, Extent of, 215-217. 



i»n, 170. 

 — , Outer, 151, 179, 180, 



on Bad Ki\, 



on ilanitou Island, 179. 



Montreal ki\ er, 220. 



Porcupine Mountains, 220, 224. . 



Potato Rivi 



, Thickness of, 186. 



Contact of acid a] 148,432-436. 



at Great Palisades, 117,314-318. 



Animikie slates and interbedded diaba 



Eastern Sandstone and Lower Magnesias limestone, 351. 



Hnronian Qoartzites and Cambrian Sandstone at Bara 



boo, 444. 



Kewecnawan gabbroa and Hnronian, at Bad River, 100, 



150. 

 mar Bladder Lake, 232. 



— ■ on Sainl Louis Rivi 



— of Keweenawan SerieB ^^-i t li Animikie Group, l 



at Grand Port - 



on Thunder Bay, 376. 



Saint Louis 1.: 



at Silver Cslet Landing, 378,379. 



Cambrian (Potsdam) sandstone, 366. 



on Kettle River, 244. 



at Taylor's Falls, 2::7. 



Eastern Sandstone, 180, 204, 303-361. 



— onBeteGrise I 



Douglas Houghton River, 855, 355. 



Gratiot Laki 



Hungarian River, 354 



in Michigan 'I 50, K. ;:i \V ,, 309,360. 



on Lac La Belle, 354. 



Ontonagon River, -03-205,359,360. 



■ Portage Lake, 359. 



Hnronian, 1.55. 156, 404-408. 



in Bad River Region, 155, 150,231,232. 



at Bladder i 



Nipigon Lake, 408. 



of North Shore, 405, 406. 



South Shore, 104, MB. 



Western Sandstone on Douglas County Copper 



Ran 



limestone and trap of Nipigon Luke. 309. 



sandstone and gabbro on Xipigon Bay, 333. 



Xipigon Lake, 339. 



Western sandstone and SaiDt Louis River slates, 263. 



Copper of amygdaloids, 90, 419-425. 



, aahbed-diabase, 122. 



, sandstones, 128. 



— in conglomerates, 120. 



Deposition of, 420-422, 425. 

 — , Modfs of occurrence of, 251, 419. 

 — , Occurrence of, on Douglas County Copper Range, 251. 



Keweenaw Point, 423,424. 



Oiitoii;i-, hi River, 423. 



Portage Lake. 421,422. 



— , Origin of, 425. 42ti. 



— , Possible productive area for, 427^29. 



in Isle Royale, 428. 



Michigan, 427. 



— , Productive area lor, Minnesota, 428, 429. 



Copper, Productive area for, Wisconsin, 427, 428. 

 — , Pumpelly on origin of, 425, 



— in sanilsi . 

 —.Sulphuretted, In gabbn 



:, 424. 

 Copper Ci ii k, Kiw, in - ;,255. 



Copper Falls mine, Sand < 171. 



I I, 111, 



II., Publications of 20, 21, l'.'. 



— on relation of I 



363. 

 Current River. Dial 

 Dacotah Mine, 189. 



Dana, J, D.,on oomposltl i anortj 



Dawson, r. W., P 



ds, 90. 



il 17. 

 Dctrital Rooks, 127 



. Sec Conglomerate, Limestone, Sand 



Devereaox, .1. R., i. 



ok Lake, Halted by Chauvenel and McKin 



Devil's Track River (coast nearmonthof), I 



, Quartz-porphyry of, 149. 



IliocUise- 



Diabase, Olivine-, (Una-grained), ami Melaphyr, 68-77. 



of A- i i 



, Alterations in, 70, 71. 



ofBi 1,185. 



Caribou Point, 77, 328. 



, Characteristics of, 68, 71 



, Color of. 69. 



itituents of, 69,70. 



. Age of, 70. 



, augite 



. tuagnetite, 70. 



, olivine, 70. 



. plaghx I 



, pyroxene, 70. 



, of Eagle Riversection, 73, 170. 



i Bin r. 75 78, 279, 280. 



Gooseberry River, 76, 289, 290. 



, Graduation ol h me-gabbro, 69. 



, Grain and texture of, 89. 



of i . I' 73, 171, 170. 



Knife K.wi, 78,279. 



Lai ; 



Lester Riw i 



Moos.- Creek, 75,247-249. 



Porcupine Mountains, 74,214,215. 



Potato River, 71, 281. 



, Pin Loiofj 69,70. 



of Silver Creek, 7ti. 



, S| Li 



near Sj, lii Rock River, 76. 



nfS.l;: . S 213. 



To Ct, 75. 



Diabase, 01 Lned). See Gabbro. Ortho- 



clase-. 

 Diabase, Olivine-free, (line-grained). 61-68. 

 , of Bohemian Range, 67, 183. 



