INDEX. 



1021 



Grand Portage, 51, 28, 415. 



jaspilytic, 3, 4, 853, 883. 



Kekequaliic lake, 36, 897, 973. 



Moose lake, 3, 5, 853, 883. 



Mud, 43. 



Ogishke, 5, 17, 520, 523, 650, 707. 



Puckwunge, 47, 50, 54, 73, 807, 836. 



Saganaga lake, 5. 



Sioux, 52. 



Stuntz, 5, 17, 343. ' 



Tower, 16. 



Upper Keewati'i. Hi. 



Vermilion lake, 5. 



Zeta lake, (1. 



Conglomerate bay, rocks from, 426. 

 Conglomeratic jaspilyte, 2, 4, 853, 883. 

 Copper, in iron ore, 885. 

 Cordierite, as a rock-forming mineral, 945. 

 Courtland, rocks for, 569, 571. 

 Coutchiehing, value of term, 10, 13. 

 Cowtongue point, rocks from, 2GO, 410. 

 Crenitic hypothesis, 22, 24. 

 Crosby, W. O., on aqueo-igneous fusion, 38. 



origin of pctrosiliceous rocks, 978. 

 Cross, Whitman, on orthorlase, 52!). 

 Cross lake, rocks from, 492. 

 Cross river, rocks from, 459, 805. 

 Crystal bay. rocks from, 162. 



Cumberlandyte, analysis, 496. 



Cummingtonite, as a rock-forming mineral, 959. 

 Dana, J. D., on Archean, 1. 



on metamorphism, 24. 

 Daubree, on older rocks, 23. 



artificial quartz, 939. 

 De la Beche, on older rocks, 23. 

 Deronda bay. rocks from, 276,279. 

 Descent lake, 546. 

 Devil Track lake, rocks from, 480. 

 Devitrified glass at Gunflint lake, 995. 

 Diabase, analyses, 102, 149, 226. 

 Beaver Bay, 59, 63, 66, 122, 189, 1000. 



Duluth, 94, 95, 105, 115, 124. 



origin of later, 986. 



related to gabbro, 980. 

 Diallage, as a rock-forming mineral, 856. 

 Diamond mine, 1)!)2. 

 Differentiation of magmas, 26, 985. 

 Dikes, Animikie, 57, 61. 



Grand Portage, 61. 



Diopside, as a rock-forming mineral, 955. 

 Dioryte, analysis, 575. 

 Disappointment lake, conglomerate, 5. 



gabbro contact and metamorphism, 11, 982. 



magnetic iron ore, 11, 858. 

 muscovadyte, 857, 982. 

 rocks from, 857-861. 



Dodge, J. A., analyses by, 83, 85, 89, 141, 149, 156, 161, 

 188, 191, 206, 211, 226, 229, 303, 400, 433, 463, 

 165,496, 519, 543,552. 

 Dolomite, as a rock-forming mineral, 952. 

 Double bay, 265, 278. 



rocks from, 267-269, 791. 

 Duck lake, 495. 



rocks from, 539, 540. 



Duluth, Animikie, 50. 



apobsidian, 155. 



aporhyolyte, 136, 139. 



diabase, 94, 95, 105, 113, 124. 



forellenstein, 393. 



gabbro, 81, 87, 91, 97, 319. 



granite, 87, 90, 94. 



red rock and gabbro, 59, 87. 



Rice Point granite, 81, 91. 



rocks from, 81-162, 390-393, 554, 569, 571-573, 741, 

 788-790, 813. 



tuff, 103, 109,118, 15]. 

 Dyke lake, 711. 



rocks from, 525, 526. 

 Dynamic agents, 975. 

 East-and-West lake, rocks from, 538. 

 East Eagle Nest lake, rocks from, 732. 

 Eastern palisades, 270, 275. 



rocks from, 453. 

 East Greenwood lake, 56, 58. 

 Eclipse beach, rocks from, 246, 247, 453-458. 

 Elftman, A. H., on anorthosyte, 65. 



on augite granite, 895, 896. 

 " Beaver Bay diabase, 404. 

 " rock localities, 535. 

 " southern limit of gabbro, 58. 



rock series of, 78, 9.35-936. 

 Ely, agglomerate, 733, 734. 



rocks from, 733, 734, 749, 750, 785-788. 

 Ely island, rocks from, 360, 361, 811, 812. 

 Ely mine, rocks from, 593. 

 Embarras river, rocks from, 363. 

 Encampment island, rocks from, 175-177, 465. 

 English rapids, rocks from, 304. 

 Ensign lake, rocks from, 636. 

 Enstatite, as a rock-forming mineral, 957. 

 Epidote, as a rock-forming mineral, 946. 

 Epsilon lake, porphyryte, 528. 



rocks from, 905. 

 Esterellyte, analyses, 662, 666. 



Kekequabic lake, 646, 659, 665, 715. 

 Eve lake. 



see Garden lake. 

 Fall lake, rocks from, 330, a33, 625, 626, 628-630, 668, 



729, 913. 



Fall river, rocks from, 252-255. 

 False Poplar river, rocks from, 453. 

 Farm lake, rocks from, 633, 634. 

 Fayalite, as a rock-forming mineral, 963. 

 Feldspar, analyses, 83, 193, 666, 897. 



masses, 65, 830. 



Ferromagnesian original magma, 27, 28. 

 Fish Hook point, rocks from, 260, 261. 

 Fish island, rocks from, 433. 

 Flask lake, rocks from, 853, 879-881. 

 Flying Cloud lake, rocks from, 698. 

 Fluorite, as a rock-forming mineral, 962. 

 Folding, at end of Lower Keewatin, 15. 



at end of Upper Keewatin, 17. 

 Fond du Lac, rocks from, 308, 369, 555, 573. 

 Foote, A. E., on zonochlorite, 428. 

 Fort Snelling. 576. 

 Fouque" and Michel Le>y, 939, 966. 

 Fox lake, rocks from, 535, 657, 



