51] 



VOLUMES XXI-XXX. 



547 



Vermont, Taconic rocks of, ii, 321 ; ix, 



205. 

 Verrill, A. E., zoological notices, i, 162 ; 

 ii, 411; iv, 477; v, 316, 397, 481. 



giant squid at Grand Banks in 1875, 

 i, 251. 



regeneration of lost parts in the 

 squid, i, 333. 



affinities of Halysites, i, 508. 



marine fauna of outer banks, New 

 England coast, ii, 292 ; iii, 135, 216, 

 309, 406; iv, 360, 447; viii, 213, 378; 

 ix, 149. 



recent papers on marine inverte- 

 brata of Atlantic coast, ii, 411. 



Architeuthis, Newfoundland, iii, 71. 



Owen's Cephalopoda, iii, 72. 



Agassiz's Echinoidea of the Chal- 

 lenger Expedition, iii, 75. 



Duncan and Sladen'sEchinodermata 

 of the Arctic Sea, iii, 247. 



notice of Tryon's Conchology, v, 

 397. 



marine fauna and deep-sea depos- 

 its, viii, 378. 



notice of Claus's Zoology, ix, 421. 



Cephalopods from Steamer Blake, ii, 

 162. 



Papers on Marine Invertebrates, ii, 

 412, 413. 



Catalogue of Mollusca, xxx, 247. 

 Vesque, J., movement of water in plants, 



v, 237. 

 Vesta, a brief study of, Harrington, vi, 

 461. 



comparison stars for, Pickering, viii, 

 17. 

 Vibrations, effect of, on a suspended disc, 



iii, 51. 

 Vilmorin, Les Meilleurs Bles, iii, 494. 



Les Plantes Potageres, v, 235. 

 Vines, S. H., practical instruction in 



Botany, xxx, 164. 

 Virginia, Rogers's geological reports, ix, 

 414; xxx, 357. 



geology of the Blue Ridge, Carnp- 

 iell, viii, '221, 242; ix, 470. 



minerals from: allanite, (orthite) 

 iv, 154, v, 335 ; beryl, v, 332 cassi- 

 terite. vii, 411; chlorophane, ' viii, 

 235; columbite, iv, 153, v, 333; du- 

 frenite, ii, 65 ; garnet, v, 334; helvite, 

 iv, 155, v, 160, 338; microlite, ii, 82, 

 v, 335, xxx, 82 ; monazite, iv, 154, v, 

 337. 



Potsdam of Balcony Palls, Campoell. 

 ix, 470. 

 Viscosity of rarefied gases, hi, 239. 

 Vision by optic divergence, Stevens, ii, 

 358, 443. 



see Optics, 



Voigt, W.. variations in length of bars, 



at freezing point, v, 448. 

 Volcanic action, volumes of solid and 

 liquid cast-iron with reference to, 

 Hannay, i, 147. 



cones, Becker, xxx, 283. 

 eruption in Hawaii, i, 79 ; ii, 226, 

 322. 



phenomena of 1883, ix, 80. 

 rocks of Cape Verdes, v, 393. 

 Volcanoes, Hawaiian, Button, v, 219; 

 xxx, 487. 



of Washington Terr., vi. 222. 

 Juddon, iii, 65. 

 see Geology. 

 Voltaic arc, inverse electromotive force 



of, ii, 74. 

 Volumes at the boiling point, i, 136. 

 Vortex-atom theory, Croll, vi, 478. 

 Voyage of the Vega, iii, 336. 

 Vries, H. De, Resinous Matters in Plants, 

 iii, 494. 



w 



Wachsmuth, C, genera of Silurian crin- 

 oids, v, 255. 



Palseocrinoidea, ii, 494; vi, 365. 

 Wadsworth, M. E., iron ores of Mar- 

 quette, ii, 320, 402, 403. 



the Milton felsyte, v, 475. 



meteorites of Bishopville and Water- 

 ville, vi, 32, 248. 



note on Irving's paper, vi, 155. 



rocks of Newfoundland, viii, 94. 



the Azoic system, viii, 313. 



atmospheric action on sandstone, 

 viii, 466. 



syenite and gabbro in Essex Co.. 

 Massachusetts, xxx, 163. 



Lithological Studies, viii, 470. 

 Wahl, W. K, the Electrical exhibition 



at Philadelphia, viii, 225. 

 Walcott, G. D., on Cyathophycus, ii, 394. 



Pcecilopod in the Utica slate, iii, 151. 



new genus of Eurypterida, iii, 213. 



injury to the eyeof a trilobite, vi, 302. 



Pre-Carboniferous strata in the Col- 

 orado canon, vi, 437, 484. 



locomotory appendages of trilobites, 

 vii, 409. 



Paleozoic rocks of Central Texas, 

 viii, 431. 



paleontologic notes, ix, 114. 



new Cambrian trilobites, ix, 328. 



Paleozoic pteropods, xxx, 17. 



The Trilobite, ii, 79. 



Report on the Great Basin, vii, 65. 



Deer Creek coal field, ix, 338. 



Paleontology of the Eureka District. 

 ix, 416. 



