906 



INDEX. 



Spirifer arrectus, 243. 



biplicatus, 300 * 303. 



bisulcatus, 300,* 303. 



cameratus, 332 * 341. 



Clannyanus, 373. 



concinnus, 240. 



crispus, 230, 248. 



cultrijugatus, 261. 



cuspidatus, 306, 308. 



disjunctus, 99,* 283, 306, 307. 

 308. 



duodenarius, 256. 



fimbriatus. 261. 



family, 170,§* 174. 



giganteus, 99.* 



glaber, 304, 307,* 308. 



granuliferus, 274. 



gregarius, 256, 260* 261. 



Homfrayi, 416. 



incrassatus, 303. 



increbescens, 303. 



Keokuk, 303. 



last of, 437 



lineatus, 341, 350. 



macropleura, 237, 239* 240. 



Meusebachanus, 341. 



mucronatus, 272,* 274. 



Munsteri, 428, 429. 



Niagarensis, 226,* 229. 



perlamellosus, 240. 



plicatus, 247. 



pvxidatus, 243. 



radiatus, 228, 229, 248. 



range of, in time, 386.* 



rostratus, 429. 



rugosus, 240. 



speciosus, 303. 



spinosus, 303. 



striatus, 171,* 341. 



sulcatus, 226,* 229, 248. 



umbonatus, 272,* 274. 



Urii, 350, 373. 



Walcotti, 438 * 448 

 Spiriferina cristata, 372, 373. 



Kentuckensis, 341. 



octoplicata, 300,* 303, 393. 

 Spirigera lamellosa, 307* 308. 



subtilita, 341. 

 Spiritual element in the earth's 



arrangements, 831. 

 Spirophyton, 296, 331. 



cauda-galli, 255,* 257, 331. 

 Spirorbis, 333, 341, 358, 385. 



carbonarius, 333,* 342. 

 Spirula, 125. § 



Spitzbergen, Carboniferous in, 

 293. 



glaciers in, 689. 



Permian in, 370. 



Tertiary plants of, 514. 



Triassic in, 424, 429. 

 Splint-bones, 601. 

 Spondylus, 475. 

 Sponges, 132,§ 177, 190, 202, 

 228, 257, 261, 300, 436, 460, 

 472, 608, 611. 



Calciferous, 188. 



Chazy, 190 



Corniferous, 257.* 



Cretaceous, 471. 



first, 175, 180. 



number of Silurian, 249. 



Potsdam, 175, 177.* 



Quebec, 190. 



siliceous, 611, 612. 



epicula of, 60, 132* 257* 

 261, 300, 471 * 472. 



Trenton, 202. 

 Spongia, 474. 



Spongiolithis appendicular, 



496.* 

 Spore, 133. § 

 Spores in coal, 317. 

 Springs, 665. 

 thermal, 401, 749. 

 thermal, in metamorphic re- 

 gions, 729. 

 thermal, in volcanic regions, 



692, 749. 

 sulphur, 234, 268, 705. 

 sulphuric acid, 705. 

 Squalodon, 520'. § 

 Squalodonts, 462, 472, 475. 



range of, in time, 589.* 

 Squaloids, 263.§ 

 Squalus cornubicus, 60. 

 Squid, 119,* 125 § 

 Squirrel, 504, 505, 568, 577. 

 Stag, 505, 517, 520, 562, 567, 



568, 571, 577. 

 Stag family, range of, in time, 



589* 

 Stalactite, 70 § 

 Stalagmite, 70,§ 557, 563 

 Staphylopteris, 348. 

 Star-fish, 117,* 128,§ 482, 611. 

 Star fishes, range of, in time, 



386* 

 Statuary marble, 75 § 

 Staurolite, 57, §* 757. 

 Staurolitic rocks, 64,§ 237. 

 Steam, agency of superheated, 



in metamorphism, 759. 

 Steatite, 55. § 

 Steatyte, 75. § 

 Steffensia, 348. 

 Stemmatopteris, 349. 

 Stenaster Huxleyi, 190. 

 Steneofiber, 519 § 

 Steneosaurus, 449 

 Stenopora, 189,§ 202, 372. 

 fibrosa, 190, 202, 206, 207, 

 247. 

 Stephanocrinus angulatus, 



226.* 229. 

 Stephanophyllia Bowerbankii, 



476. 

 Stereognathus, 447, § 571. 

 Sternbergia, 331 .§ 

 Stevenson, on force of waves, 



671. 

 Sthenorhines, 503,§ 510, 511. 



range of, in time, 589.* 

 Stigmaria, 297, 307, 312,* 325, 

 331, 348. 

 anabathra, 297. 

 ficoides, 297, 324 * 330, 331. 

 minor, 297. 

 minuta. 297. 

 perlata, 271. 

 pusilla, 278. 

 umbonata, 297. 

 Stigmarioides, 348. 

 Stinkstein, 369. 

 Stiper stones, 163, 192. 

 Stockbridge marble, 185, 196. 

 Stockwell, on eccentricity of 



earth's orbit, 715. 

 Stone Age, 574. 

 implements, 573, 574. 

 state, 722. 

 Stonesfield slate, 435, 446. 

 Stoss, 531. § 



Straparollus, 189, 303, 372. 

 Strata, positions of, 91.§* 



dislocations of, 92. §* 

 Strata, method of calculating 

 thickness of, 99. §* 



Strata, order of arrangement 



of, 101. 

 Straticulate, 685.§ 

 Stratification, 79, 81. § 

 affects erosion, 651 

 Stratified Drift, 527- 

 Stratified rocks, 62, § 79. § 



thickness of, 145. 

 Stratum, 81.§ 

 Streptacis Whitfieldi, 342. 

 Streptorhvnchus Chemungen- 

 sis, 261. 

 umbraculum, 303, 307,* 308 

 Striarca centenaria, 495. 

 Strickland on the Dodo, 580. 

 Stricklandinia, 171, § 190. 

 elongata, 261. 

 lens, 206, 208. 

 Strike, 94.§* 

 Stringocephalus, 171,$ 284, 288. 



range of, in time, 387.* 

 Stromatocerium rugosum, 202. 

 Stromatopora, 133,§ 189,§ 225. 

 compacta, 190. 

 concentrica^ 206, 225* 229, 



230, 248, 249. 

 rugosa, 190. 

 striate! la, 207- 

 Strombian group, 435. 

 Stromboli, 732. 

 Strophalosia, 172,§ 372. 

 excavata, 372. 

 last of, 373. 

 Strophodonta crenistria, 261. 

 demissa. 261. 

 perplana, 243, 261. 

 Strophomena, 172,§* 189, 190, 

 199 284. 

 alternata, 200* 203, 205, 209. 

 arenacea, 247. 

 Becki, 243. 

 complanata, 207. 

 compressa, 247. 

 concentrica, 247. 

 demissa, 261. 

 depressa, 208. 

 Leda, 206. 

 magnifica, 243. 

 pecten,206. , 



perplana, 243, 261. 

 planumbona, 172.* 

 radiata, 239 ,* 240. 

 recta, 206. 

 rhomboidalis, 206, 226* 229, 



240, 243, 247, 248. 

 rugosa, 200* 203, 247, 248, 



261. 

 range of, in time, 386.* 

 subtenta, 206. 

 Struckmann, analysis of fern- 

 ash, 365. 

 Structure, fom cooling, 627, 

 831. 

 from deposition, 82, § 546, 



631, 685. 

 affects erosion, 651. 

 Structure-mill, 697. 

 Stylina tubulifera, 449 

 Stvlinodon mirus, 510. 

 Stylolites, 222. 

 Styloneurus Scoticus, 285. 

 Stypolophus pungens, 510. 

 Subapennine Tertiary, 513. 

 Subarctic zone, 609. 

 Subcarboniferous period, 291, 

 293 

 coal in. 293, 295. 

 Subdivisions of time, table of, 

 142* 



