INDEX 



713 



Receptaculites ohioensis, 427, 445. 



Recessional moraines, 160, 175. 



Recumbent folds, 255. 



Red beds, 476. 



Red clay, 242. 



Red River, N. Dak., a young stream, 



109. 

 Red snow (Sphaerilla nivalis), 169. 

 Reelfoot Lake, formed by earthquake, 



288. 

 Regelation, theory of glacial movement, 



190. 

 Regional metamorphism, 343. 

 Rejuvenation of streams, 112. 

 Rensselaeria ovoides, 458. 

 Replacement by ground water, 60. 

 Replacement deposits, 372, 375, 378. 

 Reptiles, 489-491. 



marine, 552-557. 



Mesozoic 536-560. 



rise of, 491. 



Tertiary, 624-625. 

 Requienia, 527. 

 Requienia patagiata, 527. 

 Residual mountains, 352-354. 

 Reverse faults, 263-264. 

 Rhaetic formation, 512, 565. 

 Rhamphorynchus, 558. 

 Rhine River, dissolved minerals in, 83. 

 Rhine valley, a graben, 263. 

 Rhinobatus, 535. 

 Rhinoceroses, 605-607. 

 Rhinoceros merckii, 6j6. 

 Rhipidomella burlingtonensis, 482. 



oblata, 458. 

 Rhone River, confluence with Arve, 162. 

 Rhynchonella aequiplicata, 526. 



gnathophora, 526. 

 Rhynchotrema capax, 432. 

 Rhynchotreta cuneata americana, 446. 

 Rhytimya radiata, 433. 

 Richards and Mansfield, 264. 

 Richthofen, Baron von, 54. 

 Ries, H., 425. 

 Rift valley, 100. 

 Rill marks, 236, 237. 

 Ripple marks, 236, 237. 

 Rivers, see Streams. 

 Roches moutonnees, 158, 184. 

 Rochester shale, 439. 

 Rock basins, lakes in, 186. 

 Rock flour, 159. 

 Rock glaciers, 30, 31. 



Rocking stones, 155, 156. 

 Rock salt, origin of, 136, 443. 

 Rock terraces, 106. 

 Rocks, classification of, 23. 



acid, 329. 



decolorization of, 37. 



igneous, definition of, 24. 



metamorphic, definition of, 25. 



sedimentary, definition of, 23. 

 Rodents, 620-621. 

 Rondout stage, 439. 

 Rossberg, Switzerland, landslide at, 74. 

 Ruedemann, R., 429. 

 Russell, I. C, 354. 



Rye, England, marine erosion and deposi- 

 tion at, 224. 



Saber-toothed tiger, 672. 



Sabrina, volcano in the Azores, 295. 



Sagenites herbichi, 529. 



Salina stage, 439, 441, 443, 451. 



Salisbury, Chamberlin and, 336, 365. 



662. 

 Salt beds, 136. 

 Salt in New York state, 443. 



in the ocean, 198. 



origin of, 443. 



Salina series, 443. 

 Salt lakes, 135. 

 Salton sink, 132. 

 Sand dunes, see Dunes. 

 Sand reefs, 221-223. 

 Sandstone, 24, 249. 



lens shape of deposits, 239. 

 San Francisco, earthquake of, 275. 

 Sangamon stage, 649. 

 Sauropoda, 539, 54-1-543- 

 Scaphites, 528. 

 Scaphites nodosus, 529. 

 Scarborough beds, 665. 

 Scaumenacia, 464. 

 Scenella varians, 413. 

 Schists, 345. 

 Schizocrania filosa, 432. 

 Schrcederoceras eatoni, 434. 

 Schuchert, Chas., 398, 401, 418. 

 Schwartz, E. H. L., 335. 

 Scolithus, 415. 

 Scoriaceous lava, 301, 302. 

 Scorpions, 450. 

 Scott, D. H., 56, 467, 521. 

 Scour and fill, 88. 



