INDEX. 



903 



Rhynchonella plicatella, 248. 



psittacea, 519, 553. 



range of, in time, 386.* 



semiplicata. 240. 



spinosa, 449. 



Strieklandii . 250. 



sublepida, 249. 



ventricosa, 139,* 240. 



venustula. 261. 



Wilsoni. 247,248,250. 



Whitney i, 467 

 Rhynchonellae common in the 



Tertiary, 515. 

 Rhynchosaur, 414, 428. 

 Rhynehospira, 171. 



aprinis, 248 

 Rhyolyte, 77 § 



Richmond infusorial bed, 495, 

 496* 



Triassic area, 405 

 Richthofen, loess of China, 662. 

 Rill-marks, 84,§* 222, 684. 

 Rimella, 508. 

 Rimula, 482. 

 Ripley group, 456 

 Ripple marks, S4,§* 168, 222, 

 663, 684 



in Hamilton beds, 267. 



in Medina, 222. 



in Portage and Chemung 

 groups, 276. 



in Potsdam beds, 168. 



in Subcarboniferous, 302. 

 Rissoa Chastellii, 519. 

 Ritthausen, analysis of Lyco- 



pod ash, 365, 366. 

 River-border formations, 544. 

 River-channel 641 § 

 River -flats, 558 

 River-systems, 22. 



completed, 587. 

 Rivers, erosion by, 641. 



formation and flow of, 636 



increase of, in the Post-ter- 

 tiary, 587. 



of the Cretaceous, 479* 



of the Paleozoic, 390 



of the Quaternary, 545, 552 



of the Tertiary, 521 * 



small in Devonian. 287. 

 Riviere on Mentone skeleton, 



575. 

 Robinia, 515. 



Roches moutonnees, 532,§ 699* 

 Rochester, X Y., section, 79 * 

 Rochleder, anahsis of copro- 



lite. 61. 

 Rock City, 311 



Rock-masses, structure, etc , 

 79. 



transportation of, 697. 

 Rocks, characteristics of, 63 § 



constituents of, 47, § 761. 



durability of, 651, 675. 



expansion of, 720. 



kinds of, 62 § 



of coral reef-*, 620. 



structure of, 82. § 

 Rocks, volcanic, 727. 

 Rock-salt, 234. 



Rockv-.Mounrain region, 146, 

 293,4^,491,493,520, 523, 

 797. 807. 



Archwan in, 15">. 

 R.ockv Bits.. Carboniferous in, 

 287. 



Cretaceous in, 454, 478. 



disturbances in, 783, 789,* 

 795. 



Rockv Mts., elevation of, 524 

 586. 



geysers in, 750. 



glaciers in, 536, 699. 



in Carboniferous, 355. 



in Cretaceous, 479, 783. 



in Devonian, 287. 



in Mesozoic, 486 



in Paleozoic, 390, 391. 



in Triassic, 423. 



Jurassic in, 431, 450. 



Lignites in, 457 



Oriskany in, 233. 



Quaternary in, 528, 532. 



section of, 17,* 23 * 



Subcarboniferous in, 296. 



terraces in, 549. 



Tertiary in, 491, 493 



Triassic in, 406 



unconformability in, 232. 



volcanoes in, 724. 

 Rodents, 506, 510, 511, 518, 519, 

 520 



range of, in time, 589* 

 Roedeer, 562 



Rogers, W B & H D , Ap- 

 palachian faults and flex- 

 ures, 395, 399, 400 



mountain making, 834. 



solvent power of carbonic 

 acid, 705 



Taconic system, 836. 



■warm springs, 401 

 Rogers, H. D , 374, 763, 806 

 Rogers, W, B., Virginia Ter- 

 tiary, 495. 

 Roofing slate, 49, 69,§ 72. 

 Roots, destruction by, 607. 

 Rose, 514 

 Rostellaria Americana, 467.* 



carinata, 476. 



velata, 509. 

 Rotalia, 208. 474. 



Baileyi, 302. 



Boucana, 131 * 



globulosa, 131.* 



lenticulina, 466. 



senaria, 466. 

 Rota Una ornata, 476. 

 Rothliegende, 369. 

 Rotten limestone, 454. 



limestone group, 456 

 Rowney, analyses of coal, 316. 

 Rudistes, 456, 460, 462,§ 472, 



475. 

 Ruined City, 311. 

 Ruminants, 511, 517, 520. 



range of, in time, 589.* 

 Rupelian group, 513. 

 Rusophycus bilobatus, 225.* 

 Russia, Carboniferous in, 309, 

 344, 347. 



Cretaceous in, 470. 



Devonian in, 283. 



disturbances in, 290. 



Lower Silurian in, 207. 



Permian in, 3^9, 402 



Quaternary in, 532. 



Subcarboniferous in, 306. 



Triassic in, 424. 

 Rytina Stelleri, 581. 



Sabal,497, 498. 



Campbelli, 498. 



first of, 459. 

 Salilcs de Bracheux, 519. 



Moyens, 513. 

 Saccammina Carteri, 307- 



sphserica, 308. 



Saemann, on moisture in rocks, 



667. 

 Saccocoma pectinata, 437.* 

 Safford, J. M., on Tennessee, 



294, 374, 379, 493, 789. 

 Sagenaria, 245 § 

 Sagittae, 123.§. 

 Sahara, Desert of, 45. 



plateau of, 27. 

 St. Cassian beds, 424, 429. 

 St. John group, 163 

 St. Lawrence Gulf, in Devo- 

 nian, 3S9. 

 St. Lawrence River, in the Car- 

 boniferous, 356. 



in the Devonian, 287. 



in the Silurian, 216. 

 St. Lawrence River system, 22. 

 St. Lawrence Valley, glacier 

 in, 536, 538. 



terraces in, 550, 552. 

 St. Louis limestone, 294, 377, 

 378, 379. 



artesian well at, 665. 

 St. Peter's sandstone, 163, 183, 



377, 378. 

 St. Pierre group. See Pierre. 

 Salamander, 121,$ 512. 

 Salamandroids, 337,§ 592. 

 Saliferous rocks, how formed, 

 235. 



beds, Triassic, of Europe, 

 424. 

 Salina period, 164, 232. 



salt-wells, 234. 

 Saline deposits, 630, 712. 

 Salisburia, 329,§ 497, 514. 

 Salix, 459, 498. 



angusta, 499. 



Groenlandica, 498. 



macrophylla, 514. 



Meekii. 459 * 



proteifolia, 460. 

 Salmon, 474, 475. 

 Salt Lake, 16, 23, 551. 

 Salt lakes, 23. 



life of, 610. 

 Salt-works of Europe, 424. 



of Salina, etc , 234. 

 Salt-group, Onondaga, 232. 



Michigan, 295, 377. 

 Salterella Billingsii, 204. 



Maccullochi, '250. 



pulchella, 178 



rugosa, 178, 250. 

 Sand, 49, fi3, 68 § 

 Sandalodus, 304. 

 Sand-bars of coasts, 687, 683,* 



6S4. 

 Sand-blast carving, 632. 

 Sand-drift structure, 83. §* 

 Sand-flats, stability of, 677. 

 Sand-flea, 122 §* 

 Sand-grouse, 516. 

 Sand-hills on sea-shores, 631. 

 Sandrock, 68 § 

 Sand-scratches, 632. 

 Sand-spits, increase of. 681. 

 Sandstone, 49, 53, 62, 67, § 651 

 Sandy Hook, formation of, 681 

 Sandwich Is. See Hawaian. 

 Saniva, 510. 

 Santee beds, 494. 

 Sao hirsuta, 180.* 

 Sapindus, 497, 498. 

 Sapphirina Iris, 120* 122.§ 

 Sarcanula organ urn, 207. 

 Sardinia, shell-beds in, 562. 

 Sargasso Sea, 40, 678. 



