694 



THE GEOLOGY OF MINNESOTA. 



Lumber, 672. 



Artificial mounds, 673. 

 Ripple-marks, 500, 502, 599. 

 Rivers, systems of, 132. 

 Rochester and Northern Minnesota railway, 



elevations, 329. 

 Rock county, Pipestone and, chapter on, 533. 



See Pipestone county for contents of chapter. 

 Rock decomposed in place, 75, 98, 397, 570. 

 Rock-outcrops in the state, 116. 

 Rock- specimens collected by Norwood, 84. 

 Rocky Mountain locust, 498. 

 Roman architecture in England, 156. 



St. Croix sandstone, (83,98, 102,) 107; as build- 

 ing stone, 178, 182; Houston county, 223-7; 

 Winona, 257-9; Fillmore, 281; Blue Earth, 

 422-4. [463 f. n. 



St. John's ridge (terminal moraine), Ohio, 



St. Lawrence limestone as building stone, 154; 

 Houston county, 222; Winona, 253-7; Fill- 

 more, 282-4; Olmsted, 334; Blue Earth. 424-6. 



St. Louis river system, 135. [463 f. n. 



St. Mary's ridge (terminal moraine), Ohio 



St. Paul & Sioux City division, Chicago, St. 

 Paul, Minneapolis & Omaha railway, eleva- 

 tions, 419, 474, 496, 522, 536, 635. 



St. Paul, Minneapolis & Manitoba railway, 

 Brown's Valley branch, elevations, 616. 



St. Peter sandstone, 24,33,98,102; as building 

 stone, 177; Houston county, 218; Winona, 

 251; Fillmore, 288; Olmsted, 337-9; Dodge, 

 370; Steele, 399; Waseca, 410; Rice, 656; 

 fossils, 288, 656. 



Salix, 435; S. protesefolia, 573, 5Z4. 



Salt, brought by Indians, 6. 

 on the shores of lakes, 61. 



Salt ponds and lakes, 53, 61, 614. 



Salt springs, 42, 62, 108, 414. 



Salt spring lands, 104, 105, 108. 



Salt well at Belle Plaine, 104. 



Sand-hill crane, 37. 



Sand prairie, 642. 



Sandstone at Castle rock, 33, 58, 74, 656; Fond 

 du Lac, 32, 77, 180; Fort Snelling, 35, 85, 

 177; Jordan, 105, 179; Little rapids, 35, 85; 

 Myah Skah, 59; Pokegama falls, 54, 77, 96; 

 St. Anthony falls, 33, 58; Taylor's Falls, 104; 

 "of the upper Mississippi", 83. 

 See Potsdam, St. Croix, Jordan and St. 

 Peter formations. 



Sandstones as building stones, 176-182. 



Satin spar, 341. 



Scaphites Nicolletii, 600. 



Sciurus tridecem-striatus, 32 f. n. 



Scolithus, 288. 



Sections (also see Wells): 



Cretaceous beds on Big Cobb river, 438. 

 on Cottonwood river, 573-4. 

 in Le Sueur valley, 435. 

 on Maple river, 437. 

 on Minnesota river near New Ulm, 574 6. 



Trenton limestone at Minneapolis, 31,58,168. 



Shakopee limestone at Mankato, 429. 



Jordan sandstone in Blue Earth county, 427. 



St. Croix sandstone at Hokah, 224. 

 in Winona county, 257. 



Potsdam quartzyte, Cottonwood county, 502. 



Albert Lea, 388. 



Caledonia, 225. 



ChatUeld, 286. 



Clear Grit, 283. 



Clinton Falls, 397. 



Concord, 370. 



Dresbach (at a fault), 259. 



Faribault, 656. 



Fort Snelling, 35, 85. 



Fountain, 288, 292. 



Freeborn, 384. 



Gregson's mill, Mower county, 360. 



Heron Lake, 503. 



Hokah, 224. 



Kasota, 638. 



L'Huillier mound, 430. 



Mankato, 423, 429. 



Mantorville, 373. 



Milton, 371. 



Money Creek, 229. 



Oronoco, 335. 



Owatonna, 398. 



Pickwick, 246, 262. 



Pleasant Grove, 342. 



(iuincy, 336. 



across Root river valley, 287. 



St. Anthony falls, 31, 58. 



Spring Valley, 301. 



Whalan, 284. 

 Selenite crystals, 600. 

 Sequoia, 384. 

 Shakopee limestone: as building stone, 163; 



Houston county, 219-221; Winona, 252; 



Fillmore, 285-8; Olmsted, 336; Dodge, 370; 



Blue Earth, 429-431; Faribault, 459; Le 



Sueur, 336-9; Rice, 657. 

 Shark's tooth, 435. 

 Shells, in alluvial deposits, 552, 553. 



interglacial, 441, 485, 487,511, 580, 608-9. 

 Shrubs: Houston county, 214; Winona, 247; 



Fillmore, 278; Olmsted, 332; Mower, 351; 



Dodge, 369; Freeborn, 381; Steele, 397; Blue 



Earth, 421; Faribault, 457; Cottonwood, 



499; Murray, 525; Pipestone and Rock, 537; 



