IKDEX. 



107^ 



Section of Alps, 102*, 110* ; Car- 

 bonate HiU, Leadville, 841* ; 

 Coal-measures, 651-652, 656, 65T ; 

 KUauea, 284*, 285* 



— of Laramide Mountain range, 

 Brit. A., 359* 



Sediment, '76§, 16T§ ; ratio of, to 

 water, 190 



Sedimentary rocks, 167§ ; sedimen- 

 tation more rapid in salt water 

 than in fresh, 209, 210, 217 



Sedum rhodiola, 945 



Seeds, transportation of, 156, 163 



Seiches, 202§ 



Seine, 191 



Seismograph, seismometer, seismo- 

 scope, 375§ 



Selachians, 415§, 416* 



Selaginella, 718 



Selenium, 331 



Selkirk Mts., 240 



Selvage, 332§ 



Semele Stimpsoni, 927 



Seminula subtilita, 675*, 685, 690 



Semi-oviparous Mammals, 415 



Seneca Lake, 603, 605 



Senonian group, 815, 858, 859, 860, 

 866, 867 



Sepia, 424 



Septaria, 97*, 138* (quartzyte) 



Sepulchre Mt., 937 



Sequanian group, 790 



Sequoia, 816, 831, 837, 840, 859, 921 

 939 ; ambigua, 838 ; gigantea, 939 

 gracilis, 834 ; Langsdorffl, 921 

 Eeichenbachi, 834, 839 ; Smittiana, 

 833*, 834 



Serai series, 728 



Sergestes mollis, 52 



Sergipian group, 867 



Sericite, 65§ ; schist, 84, 88, 89 



Sericitschiefer, 84 



Series, 406§ 



Serolis, 420* 



Serpentine, 68§, 319§ 



Serpula, 423 



Serpulidse, 59 



Serpidites dissolutus, 515 



Serripes Groenlandicus, 983, 984 



Sertularia, 430* § ; abietina, 430*; 

 rosacea, 430* 



Sevier Lake, 119 



Sewickley coal-bed, 651 



Seychelles Islands, 737 



Shakopee limestone, 493 



Shale, shaly structure, 80§, 92§ 



Shan-a-lin Mts., 32 



Shansi, 696 



Shan-Tung, 198 



Sharks, 56, 60, 73 (analysis of bones), 

 415, 416* ; teeth of, dredged, 144. 

 See Selachians 



Sharon coal-beds, 656 ; conglomer- 

 ate, 648, 656 



Shasta, Mt., 87, 267*; glaciers of, 

 240, 945 ; height of, 296 



— group, 818 ; Aucellse of, 834 

 Shasta-Chico series, 809, 815, 820, 



830, 868 

 Shawangunk grit, 538, 539, 541 



— Mts., 538, 946 

 Shawnee coal-bed, 828 



Shear-zones, 111§, 322§ 

 Shearing, 168§, 216, 322 

 Sheep-backs, 250*§ 

 Shell-beds or heaps, 98, 158 ; of 



Maine, 983, 994 

 Shell Bluff, Ga.,916 

 Shell-limestone, 79§, 151 ; marl, 79§ 

 Shenandoah valley, 357 

 Shenango group, 638 

 Sheppey, Isle of, 921, 923, 925 

 Sheridan, Mt., height of, 296 

 Shetlands, 87, 218 

 Shinarump Cliffs, 747 

 Shipworm, 158 

 Shoal Creek limestone, 817 

 Shore-lines, elevated, in region of 



Great Lakes, 906 ; about Lake 



Winnipeg, 985 

 Shore-platforms, 220, 221*, 222* 

 Shoshone Lake, 200, 305 



— Range, 366, 945 

 Shot, angle of rest of, 165 

 Shrimps, 420, 488, 61.5* 

 Shrinkage cracks, 94*§, 464 

 Siam, 22 



Siberia, 32, 166, 195, 776, 794, 833, 

 927 



Sicily, 296, 481, 921 



Siderite, 69§, 126, 344, 449, 664, 

 665 



Sierra Blanca, 874 



Sierra Chain and System, 865, 389, 

 811 



Sierra de Salina, 892 



Sierra Madre, 444, 758 



Sierra Nevada, 25, 27 ; buried river 

 valleys, 204 ; volcanoes of, 296 ; 

 river systems of, 934 ; glaciers 

 of, 240 ; upturnings at close of 

 Jurassic, 809, 814; elevation in 

 the Tertiary, 866, 932 



— , Archaean in, 444; Upper Silu- 

 rian, 810 ; Carboniferous, 635, 

 659; Triassic, 746, 747, 758, 

 809 ; Triassic and Jurassic, 739, 

 809; Jurassic, 358, 748, 760, 809 

 (close of), 810, 932 ; Tertiary, 366, 

 883, 8S7, 892, 895, 934 (elevation), 

 935, 937 (eruptions) ; Glacial, 945 



Sierra San Carlos, 820 



Sigillaria, 611. 639, 654, 667, 668, 

 682, 689, 698, 699; Brardii, 689, 

 693, 705; Halli, 595*; Lescurii, 

 689 ; mammillaris, 689 ; Menardi, 

 689 ; monostigma, 689 ; palpebra, 

 622 ; Pittstonana, 668*, 688 ; Silli- 

 mani, 668*, 688; tesselata, 689; 

 Vanuxemi, o09* 



Sigillarids, 698, 712, 718, 750 ; Car- 

 boniferous, 669, 670, 672, 688; 

 Coal-measure, 653 ; Permian, 684, 

 704, 718 (last) 



Silene, 240 ; acaulis, 945 



Silesia, 88 ; Coal-measures in, 696, 

 702, 703 



Silica, 62§, 63, 135-186 ; as a soUdi- 

 fler, 323 



Silicates, 62§, 68, 64-68 



Siliceous deposits, 82, 152, 305, 806, 

 308, 309, 335, 441 



— Claiborne, 885, 888 



— group, Tenn., 638 



Siliceous organic rock -material, 72§, 

 140, 141 



— rocks, 80, 81, 82 ; slate, 82§ 



— solutions, 82, 94, 97 



— sponges, 431§ 

 Silicifled wood, 125, 135 

 Silicon, 62§, 6;3 ; tluoride, 66 

 SUlery sandstone, 467, 496 

 Sillimanite, 319 



Silt, 81 §, 150, 167§, 177, 190, 193, 



628 ; of rivers, amount of, 190 

 Silurian, 535 



— and Cambrian, history of the 

 terms, 463, 464§, 489 



— , Lower, 489 ; European, 517 ; 

 economical products, 522 ; gen- 

 eral observations, 524 ; the Cin- 

 cinnati uplift at close of, 387, 532, 

 587 



— , Upper, 585 ; foreign, 563 ; gen- 

 eral observations, 570 



Siluric era. See Silurian 



Siluroids, 843 



Silver Caflon, 866* 



Silver Cliff, 340 



Silver-moth, 702 



Silver Peak, 469 



Silverado, 733 



Simeto, erosion of the, 184 



Simoceras, 798 



Simosaurus, 773 



Sind, 299, 770, 925 



Sindree, changes of level at, 349 



Sinemurian group, 775; (Lower), 

 790 



Singala Mt., 368* 



Sinopa, 918 



Sinter, 82§ 



Sinupallial, 425§ 



Sioux quartzyte, 468 



Siphocyprsea problematica, 917 



Siphonaria Penjinse, 927 



Siphonema, 503 



Siphonia lobata, 860* 



Siphonotreta, 521 ; unguiculata, 

 427* 



Sitomys, 918, 919 



Sivatherium, 927 



Siwalik Hills, 928, 927, 933 (Tertiary 

 beds), 986 



Skiddaw slates, 517, 519, 520 



Skye, 988 



Slate, 88§, 92§ ; siliceous, 82§ 



Slates, auriferous, 748, 759, 809 



Slaty cleavage or structure, 77, 92§, 

 112§, 113*, 8T0, 371 



Slaty Peak, Col., height of Creta- 

 ceous rocks, 935 



Slaty rocks, 66 



Slickensides, 96§, 108, 111 



Slimonia, 567 



Slope of loose materials, 165 



— of mountains, 26, 27*§ ; of Eocky 

 Mts.. 26* 



Sloth, 54 



Smaragdite, 88 



Smila.x, 435 



SmDodon, 1000 



Smithsonite, 342 



SnaOs, 424, 425* 



Snake Mt., fault at, 527. 528* 



Snake Elver, 300, 305 ; plains, 93S 



