SCIENTIFIC INDEX. 



689 



" IIole-in-the-Mountain", 603. [ite, 626. 



Hornblende schist, 597, 598; fragments in gran- 

 " Horse-back", 666. 

 Houston county, chapter on, 207. 

 Situation and area, 207. 

 Surface features, 207. 



Natural drainage, 207. 



Water-power mills, 208. 



Topography, 208. 



Elevations, 211. 



Soil and timber, 213. 



Trees and shrubs, 214. 

 Geological structure, 217. 



Trenton limestone, 218. 



St. Peter sandstone, 218. 



Shakopee limestone, 219. 



Jordan sandstone, 221. 



St. Lawrence limestone, 222. 



St. Croix sandstone, 223. 



Drift, 227. 



Alluvial terraces, 227. 



Wells, 230. 

 Material resources, 231. 



Building stone, 231. 



Sand, 233. 



Lamellar calcite, 233. 



Brick, 234. Lime, 234. 

 Earthworks, 235 (also 673). 

 Hudson River formation, 102, 176, 217, 218, 



260, 289, 300, 334, 339, 361, 397, 655. 

 Huronian system, 100, 103, 104. 

 Hydraulic limestone and cement, 434, 449. 

 Hypersthene, 103. 



[641, 668. 

 Ice-sheet, 99, 101, 406, 440, 441, 463, 479, 484, 



See Glacial currents. 

 ice-sheet, drift contained in, 440,602, 604,626. 



drift on, 387, 604, 610, 662, 665, 668. 



thickness, 484, 549. 

 Image in mound near Lanesboro, 673. 

 Indians, 3, 4-23,46,55, 63, 81; burial customs, 



673; inscriptions, 21, 33, 501, 555; stone pipes, 



560; traditions, 64, 69, 546. 

 Induration of quartzyte, 502. 

 Inoceramus, 600. 



Inscriptions by Indians, 21, 33, 501, 555. 

 Interglacial drainage and water-courses, 484, 



507, 580. 



Interglacial epochs, 313, 364, 406, 484, 580. 

 Interglacial formations, 313, 363,390,402, 406, 



441, 466, 485, 511, 552, 580, 585-6, 609, 626. 



See Wood in drift deposits. 

 Intersecting glacial stria;, 503. [Alluvium. 

 Interval lands, 567. See Bottomlands and 

 Iron ore, 94, 103; at Vermilion lake, 96, 103; 



at Prairie river falls, 97: in Fillmore county, 



44 



310, 314, 318; boulders in drift, 344. 

 Iron springs. See Chalybeate. 

 Isotelus, 343. 

 Itasca prairie, 386. 



[491. 

 Jackson county, Cottonwood and, chapter on, 



See Cottonwood county for contents of chapter. 

 Joints, 500, 502, 569, 698, 600, 618, 620. 

 Jordan sandstone, 179, 221 , 252, 280, 284, 334-5 , 



426-9, 636. 

 Juniper, 139. 



Kames, 388, 417, 444, 464, 582, 624, 665-9. 



Kame-like deposits, 545, 565, 582, 584, 606-7. 



Kaolinized gneiss and granite, 37,98,570,588. 



Kasota stone, 164, 638, 646. 



Kentucky coffee-tree, 139, 215, 248, 421. 



Keweenawan formation, Michigan and Wis- 

 consin, 422, 500. 



Kiester (fourth) moraine, 387, 461 f. n., 462, 

 581,606,621, 641. 



Labradorite, 103; labradoiite rock, 149. 



Lac qui Parle county, Big Stone and, chapter 

 on, 6 13. See Big Stone county tor contents 

 of chapter. 



Lakes, 130, 480, 564; of the upper Mississippi 

 region, 78; of the Park region, 89; Dodge 

 county, 367; Freeborn, 376-8; Steele, 394-6; 

 Waseca, 405; Blue Earth, 416; Faribault, 455; 

 Watonwan, 473; Martin, 479-485; Cotton- 

 wood and Jackson, 493; Murray, 518; Nobles, 

 519; Pipestone, 539; Brown and Redwood, 

 563; Yellow Medicine, Lyon and Lincoln, 

 591; Big Stone and Lac qui Parle, 614, 623; 

 Le Sueur, 633; Rice, 648, 651, 660. 



Lakes, absent beyond the outer moraine, 519. 

 chains of, in Martin county, 479-485. [640. 

 in drift deposits, origin of, 386, 408, 480, 622, 

 See Glacial lakes. 



Lake-ridges, 564, 624, 643. 



Laumontite, 103. 



Laurophyllum reticulatum, 576. 



Laurus, 574; L. Nebrascensis, 573. 



Lead, 340. 



Leaf hills, 89, 119, 121, 123, 125, 130, 406. 



Leaves, Cretaceous fossil, 573, 574, 576. 



Leeches, 78. 



Leguminosites Marcouanus, 576. 



Lemont limestone, 182. 



Leptsena, 293; L. sericea, 301, 339. 



Le Sueur county, chapter on, 632. 

 Situation and area, 632. 

 Surface features, 632. 

 Natural drainage, 632. 

 Topography, 633. 



