800 



INDEX. 



Vorticella group, 749.g 

 Voltzia heterophylla, 419, 

 434,* 438.. 



Wacke, 74.§ 89.g 

 Walchia, 373, 374.§ 



piniformis, 374.* 

 Waldheimia, 181.*§ 

 Wales. Carboniferous in, 353. 



disturbances in, 412. 



Subcarboniferous in, 318. 



Triassic in, 433. 

 Walrus, 422.g 



fossil, 516. 

 Warren, skeleton of Masto- 

 don, 563. 

 Warsaw limestone, 307. 

 Washita limestone, 470. 

 Water, as a dynamical agent, 

 632. 



force of running, 635, 650. 



See, further, Rivers, 

 Oceans, Glaciers. 

 Waters of ocean, specific gra- 

 vity of, 650. 



subterranean, 648. 

 Waterlime group, 252. 

 Wave-marks, 94.§ 

 Waves, force and action of, 



654, 656. 657,* 658. 

 Waverly sandstone. 288, 308. 

 Way, J. M., discoveries by, 750. 

 Weald clay, 448. 

 Wealden epoch, 447. 

 Wear. See Erosion. 

 Weasel, 422.£ 

 Wells, Artesian, 648.* 



Wenlock group, 260. 



West Indies, trends of islands 



in, 37. 

 Western interior region, 413. 



Islands, 38.* 

 Whale, 423.g 

 Whales, fossil, 515. 

 first of, 478. 

 range of, in time, 572. 

 Wheatley, on Triassic Rep- 

 tiles, 424. 

 White, M. C, on Protophytes, 

 etc., in hornstone, 270, 

 311. 

 White Mts., of Devonian age, 

 409. 

 Oak Mountain sandstone, 



384. 

 River group, 509, 519. 

 Whittleseya, 356. 

 Winchell, A., on Alabama 

 Cretaceous, 470. 

 on rocks of Michigan, 

 380. 

 Wind River group, 510. 

 Winnipeg Lake, TJ. Silurian 

 fossils at, 242. 

 Trenton at, 206. 

 Wisconsin, Calciferous in, 175. 

 Chazy in, 205. 

 Clinton in, 234. 

 lead-mines of. 207. 

 Potsdam in, 174. 

 Trenton in. 206. 

 Upper Helderberg in, 270. 

 uplifts in, 304. 

 Wombat, 424.2 



Wood, composition of, 360. . 



decomposition of, 359. 

 Woodville sandstone, 381. 

 Woodwardites, 355. 

 Woolwich beds, 522. 

 Worm-holes in Portage beds, 

 289. 

 in Potsdam beds, 185, 

 197. 

 Worms, 153.$ 



range of, in time, 401. 

 Worthen, A. H., on rocks of 

 Illinois, 382. 



Xanthidia, 271,* 481. 

 Xiphodon, 529.§ 

 Xylobius Sigillarise, 349 * 



Yoldia limatula, 521* 

 Yorktown epoch, 506,510,521. 



Zamia, 418 .*§ 



Zaphrentis bilateralis, 236 * 



gigantea, 270, 273.* 



Rafinesquii, 273.* 

 Zeacrinus elegans, 312.* 

 Zechstein, 372. 

 Zeolites, 62.g 



origin of, 715. 



formed in a brick wall at 

 Plombieres, 716. 

 Zeuglodon cetoides, 515,§517.* 



532. 

 Zones of depth, for oceanic 



species, 608. 

 Zygobates, in California, 521. 



THE END. 



ELECTROTYPE!) BY L. JOHNSON 4 CO, 

 PHILADELPHIA. 



