INDEX. 



821 



Rocks, volcanic, 707. 

 Rock-salt, 234. 



Rocky-Mountain region, 146, 

 293, 488, 491, 493, 520, 523. 

 Archaean in, 150. 

 Rocky Mts., Carboniferous in, 

 287. 

 Cretaceous in, 454, 478. 

 disturbances iG, 740 * 

 elevation of, 524, 586. 

 geysers in, 719. 

 glaciers in, 536, 685. 

 in Carboniferous, 355. 

 in Cretaceous, 479, 752. 

 in Devonian, 287. 

 in Mesozoic, 486. 

 in Paleozoic, 390, 391. 

 in Triassic, 423. 

 Jurassic in, 431, 450. 

 Lignites in, 457- 

 Oriskany in, 232. 

 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, 704. 

 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. 

 metamorphism, 729. 

 solvent power of carbonic acid, 



690. 

 warm springs, 729. 

 Rogers, H. D-, rocks of Penn- 

 sylvania, 374. 

 Rogers, W. B., earthquake, 742. 



Virginia Tertiary, 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. 

 Rotalina 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, 369, 402. 

 Quaternary in, 532. 

 Subcarboniferous in, 306. 

 Triassic in, 424. 

 Rytina Stelleri, 581. 



Sabal, 497, 498. 

 Campbelli, 498. 

 first of, 459. 

 Sables de Bracheux, 519. 



Moyens, 513. 

 Saccammina Carteri, 307. 



sphaerica, 308. 

 Saemann, on moisture in rocks, 



656. 

 Saccocoma pectinata, 437.* 

 Safford, J. M., on rocks of Ten- 

 nessee, 294, 374, 379, 493. 

 Sagenaria, 245. § 

 Sagittas, 123. § 

 Sahara, Desert of, 45. 



plateau of, 27. 

 St. Cassian beds, 424, 429. 

 St. John group, 163. 

 St. Lawrence Gulf, in Devonian, 



389. 

 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, 654. 

 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, 696. 

 Salisburia, 329, § 497, 514. 

 Salix, 459, 498. 

 angusta, 499. 

 Groenlandica, 498. 

 macrophylla, 514. 

 Meekii,459.* 

 proteifolia, 460. 

 Salmon, 474, 475. 

 Salt-Lake, 16, 23, 561. 

 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, 53, 66,§ 758. 

 Sandalodus, 304. 

 Sand-bars of coasts, 669,* 670, 



671. 

 Sand-blast carving, 632. 

 Sand-drift structure, 83.§* 

 Sand-flats, stability of. 665. 

 Sand-flea, 122. §* 

 Sand-grouse, 516. 

 Sand-hills on sea-shores, 631. 

 Sandrock, 65. § 

 Sand-scratches, 632. 

 Sand-spits, increase of, 668. 

 Sandstone, 49, 53, 62, 65,§ 645, 



730. 

 Sandy Hook, formation of, 668. 

 Sandwich Is. See Hawaian. 

 Saniva, 510. 



Santee beds, 494. 

 Saohirsuta, 180.* 

 Sapindus, 497, 498. 

 Sapphiriua Iris, 120* 122.§ 

 Sarcinula organum, 207. 

 Sardinia, shell-beds in, 562. 

 Sargasso Sea, 40, 665. 

 Saskatchewan, Cretaceous on, 



456. 

 Sassafras, 458. 

 Cretaceum, 459.* 

 Mudgii, 460. 

 mirabile, 460. 

 obtusum, 460. 

 recurvatum, 460. 

 Saurians, 338,§ 592. 



See Reptiles. 

 Saurian coprolite, 446.* 

 Saurichnites lacertoides, 373. 



salamandroides, 373. 

 Sauriehthys, 428. 



apicalis, 429. 

 Sauripteris Taylori, 281 * 

 Saurocephalus, 467, 477. 

 first of, 477. 

 lanciformis, 477. 

 Sauropus primaevus, 302,* 304. 

 Saw-fishes, 509. 

 Saxicava, 608. 

 Arctica, 550, 551, 555. 

 sands, 550, 555. 

 Saxifraga oppositifolia, 532. 

 Saxony, Carboniferous in, 346. 

 infusorial bed in, 514. 

 Permian in, 369. 

 Scalaria, 508 

 Bowerbankii, 518. 

 Groenlandica, 519, 551. 

 Scaglia, 470. 

 Scalent series, 375. 

 Scales, 613. 

 Scallops, 561. 

 Scalites angulatus, 191.* 

 Scandinavia. See Norway, 



Sweden. 

 Scapharca hians, 500.* 

 Scaphiocrinus, 303, 341. 

 Scaphirhyncus, 264. 

 Scaphites, 457, 462.§ 

 aequalis, 476, 477. 

 Conradi, 456, 462, 463*467, 



469. 

 Geinitzii, 476. 



larvaeformis, 463,* 467, 477- 

 Warreni, 477. 

 Scapolite, 57,§* 726, 728. 

 Scars of Lepidodendrids, 324.* 



of Tree-ferns, 325.* 

 Scelidotherium, 570. 

 Schilleryte, 73. § 

 Schimper, W. P., on coal-plants, 



328, 330. 

 Schist, varieties of, 68, § 70. § 

 Schistose rocks, 63. § 

 Schizodus, 303. 

 amplus, 342. 

 dubius, 372. 

 last of, 373. 

 ob3Curus, 372. 

 Schlotheimii, 372. 

 truncatus, 372. 

 Schizopods, 350. 



range of, in time, 388.* 

 Schizopteris, 348. 

 Schoharie grit, 254. 



epoch, 254. 

 Schultz-Fleet, analysis of ash, 



365. 

 Schutzia, 348. 



