SCIENTIFIC INDEX. 



693 



Potsdam period, Cupriferous series referred 



to, 100, 103, 422, 500. 



Potsdam sandstone as building stone, 180. 

 "Potsdanr'fSt. Croix) sandstone, 83,98,102,107. 

 Pottery, 343, 402, 452, 588. 

 Prairies, 42, 125, 136, 421, 498, 524, 526, 567, 617. 

 Prairie-fires, 129, 524, 526, 617. 

 Preglacial erosion, 226, 234, 275, 418, 439. 

 Productella truncata, 360. 

 Proteus of the lakes, 32 f. n. 

 Protophyllum crednerioides, 574. 

 " Protozoic rocks," 83. 



Qualitative tests of building stones, 184. 

 Qualities of building stones, 187, 195-203. 



of the natural waters of the state, 136. 

 Quarries: Houston county, 221, 231; Winona, 

 252, 256, 265; Fillmore, 284, 292, 297, 305-7, 

 322; Olmsted, 335, 337, 341, 348; Mower, 357- 

 361, 366; Dodge, 373; Steele, 397; Blue Earth, 

 446; Cottonwood, 513; Pipestone and Kock, 

 554; Brown and Redwood, 587; Yellow Med- 

 icine and Lincoln, 611; Big Stone, and Lac 

 qui Parle,630; LeSueur,646; Kice, 671-2. 

 Quarries referred to in chapter on the building 

 stones of the state: 



Beaver Bay, 145, 148. 



near Caledonia, 162, 225. 



Clinton Falls, 176, 397. 



Dakota, 178. 



Dresbach, 178. 



Duluth, 147. 



East Saint Cloud, 142. 



Faribault, 171,672. 



Fond du Lac, 180. 



near Fort Snelling, 177. 



Fountain, 170, 288, 292, 322. 



Frontenac. 160. 



Hinckley, 176. 



Jordan, 179. 



Kasota, 165, 638, 646. 



Lanesboro, 152, 284, 323. 



near Luverne, 151, 554. 



Mankato, 166, 429, 447. 



Mantorville, 167, 373. 



Minneapolis, 175. 



Ottawa, 164, 639, 646. 



Pipestone City, 151, 554. 



lledstone, near New Ulna, 150. 



Red Wing, 160. 



Saint Paul, 172. 



Sank Rapids, 142, 148. 



Shakopee, 164. 



Sioux Falls, Dakota, 152. 



Stillwater, 159. 



near Stockton, 162, 255. 



Taylor's Falls, 182. 

 Watab, 146. 

 Winona, 161, 265. 



Quartz, 38, 143, 360, 569; veins, 597, 598. 

 Quartzyte near New Ulm, 36, 60, 85, 149, 499; 

 at the pipestone quarry, 63, 70, 537, 554; 

 at Pokegama falls, 77, 100; in Watonwan 

 county, 474, 476; Cottonwood, 494, 499, 513; 

 Pipestone and Rock, 537, 554; Brown, 568, 

 572. 



Quartzytes as building stones, 149. 

 Quebec formation, 424. 



Raccoons, 28. 



Rain-fall, 498, 524, 591. 



Rainy river, drainage system, 134. 



Receptaculites, 297, 298, 342, 371, 374, 510. 



Recession of ice-sheet, 406, 479, 496, 504, 508, 



580-1, 591, 604-6, 622, 641, 662, 669. 

 Red-bird, 37. 

 Red clay at Duluth, 120. 

 Red marble, 24. 



Red marls and sandstone at New Ulm, 98, 576. 

 Red river of the North, system of, 133. 

 Red till, 126, 127, 627, 658, 666, 668-9. 

 Redwood county, Brown and, chapter on, 562. 

 See Brown county for contents of chapter. 

 Rensselseria, 360. 

 Reptiles, 37, 78. 

 Rhynchonella, 292, 301, 655. 

 Rice county, chapter on, 648. 

 Situation and area, 648. 

 Surface features, 648. 



Natural drainage, 648. 



Water-powers, 650. 



Topography, 651. 



Elevations, 652. 



Soil and timber, 652. 



Trees and shrubs, 653. 

 Geological structure, 654. 



Rocks of the Trenton period, 655. 



St. Peter sandstone, 656. 



Shakopee limestone, 657. 



Drift. Till, 658. 



Moraines and morainic belts, 660 



Gravel and gravel terraces, 662. 



Cannon river terraces, 663. 



The lower terrace, 665. 



The Bridgewater kame, 665. 



Minerals from the drift, 669. 



Mastodon remains, 670. 



Wells, 670. 

 Material resources, 671. 



Building stone, 671. 



Lime, 672. Brick, 672. 



Sorghum, 672. 



