INDEX. 



1023 



Harris lake, rocks from, 935. 



Hat point, rocks from, 284-286, 792, 793. 



Hautefeuille, 939. 



Hematite, as a rock-forming mineral, 9GT>. 



Hensoldt, H., rock descriptions by, 625, 626. 



Heulandite, analyses, 229. 4(53. 



High island, rocks from, 298. 



Hinckley, sandstone, 53. 



Hinsdale, rocks from, 734, 735. - 



Historical sketch of opinion on older rocks, 22. 



Hornblende as a rock-forming mineral, 957. 



Horseshoe bay, 278. 



rocks from, 479. 

 Hunt, T. S., crenitic hypothesis, 22, 24, 28. 



historical sketch of opinion on older rocks, 22. 

 Huronian, uncertainty of, 1, 13. 

 Hutton, on older rocks, 22. 

 Hypersthene as a rock-forming mineral, 956. 

 Hypothesis, consequences, if true, 986, 998. 

 Igneous rocks, Archean, 18. 



Taconic, 55. 



Illusion lake, rocks from, 636-638. 

 Ilmenite, as a rock-forming mineral, 963. 

 Ingall, E. D., on Animikie, 73. 



on Logan sills, 60. 

 Intel mediate rocks, 980, 986. 

 Iron lake, rocks from, 495, 682, 919, 920, 934. 

 Iron-bearing member of the Animikie, its phases, 997. 

 Iron ore, Akeley lake, 48. 



Ash and Fox lakes, 535. 



Birch lake, 613, 766. 



Disappointment lake, 11, 18, 858. 



inclosed in greenstone, 14. 



Mayhew lake, 495, 501. 



metamorphosed by gabbro, 12. 



near Ely, 749. 



White Iron lake, 765. 

 Irving, R. D., on Beaver Bay diabase, 63. 



on orthoclase gabbro, 86. 

 " quartz and adularia, 213. 

 Irving and Van Hise, 937. 

 Isle Royide, conglomerate, 52. 



rocks from, 418-439. 

 Jasper. 



see jaspilyte. 

 Jasper peak. 



sec Chester peak. 

 Jaspilyte. 3. 



conglomeratic, 3. 4, 853, 883. 



origin, 981. 



Moose lake, 4, 18, 853, 883. 



use of term, 344. 



Jones bay, Vermilion lake, rocks from. 576. 

 Josephine, Mt, 57. 



rocks from, 792, 793, 795. 

 Jukes, on older rocks, 26. 

 Julien, A. A., 76. 



Kawashachong falls, rocks from, 332, (525. 628. 

 Kawishiwi river, rocks from, 619-624, 767, 861-863, 



889-892. 

 Kawishiwin, definition, 13. 



extent, 15. 

 Keewatin, separable into two parts. (!. 



see under Lower and Upper Keewatin. 



strike of, 17. 



Kekequabie lake, conglomerate. 36. 648. 

 esterellyte, 646, 659, 665. 715. 

 granite, 32, 640, 896. 



derived from elastics, 32. 

 porphyry, 33, 34. 

 rocks from, 527, 639-649, 659-668, 714-725, 779, 780, 



888, 896-904. 



Keweenawan, age of Puck wunge conglomerate, 54, 992. 

 Cabotian epoch of eruption, 55, 999. 

 igneous rocks, 55. 

 Cabotian, 55. 

 Manitou, 55. 

 possibly pre-gabbro. 55. 

 later fragmental rocks, 53. 

 Manitou. 53, 73. 



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

 red rock. 61. 

 structure of, 1000. 

 King, Clarence, on older rocks. 24. 

 Kloos, J. H., on Carlton rocks. 39O. 



on titanium at Duluth. 965. 

 Knife falls, rocks from, 380-387. 

 Knife lake, gabbro, 15. 

 headland, 774-776. 



rocks from, 318, 319, 668, 726, 774-776. 805. 

 Knife river, rocks from, 166-170, 466. 

 L lake, rocks from, 540-542. 

 Labradorite. analysis, 83. 



as a rock-forming mineral, 943. 

 Lacroix, A., acknowledgments to. 76. 

 on bowlingite, 205. 

 " brown rims about magnetite, 502. 

 " cordierite schist, 765. 

 " iddingsite. 232. 

 " minerals of diabase, 291. 

 ' serpentine, 429. 



Laurentian, uncertainty of, 1, 13, 988. 

 Lawson, A. C., on anorthosyte, 65. 

 on Coutchiching, 10, 987. 

 ' granite, 27, 

 " iddingsite, 232. 

 ' Keewatin, 13. 

 " Logan sills, 59. 



Lee mine, rocks from, 582, 594, 599, 742, 887. 

 Lehmann, on older rocks, 22. 

 Lester river, rocks from, 157-162. 

 Leucoxene, as a rock-forming mineral, 962. 

 Lvy, Michel, on alteration of olivine, 231. 

 on esterellyte, 647, 663. 

 " older rocks, 26, 28. 

 Limestone, sideritic, analysis, .'112. 

 Animikie, 43, 312, 688. 

 Gunnint lake, 688. 

 Ogishke Muncie lake, 525. 

 Pike rapids, 50. 

 Twin peaks, 5a3. 

 Little Falls, gabbro, 15, 50. 

 rocks from, 568, 756, 757. 

 staurolitic schist, 50. 

 Little lake, 485. 



rocks from, 486-488, 493, 494. 

 Little Marias, 409, 460. 



rocks from, 226-228. 

 Little Mud lake, rocks from, 909. 



