Crinoidea, general remarks on the characters and geological position of, _J. Hall_, xlv, 349. ----, see farther, ZOOLOGY, _Radiata_. Crocodile, fossil, in New Jersey, xvii, 289; xxvii, 353; xlviii, 265.^f _Croom, H. B._, plants from Florida, xxv, 74. ----, botanical communications, including botany of Middle Florida, xxvi, 313. ----, new localities of plants at the South, with notes and descriptions, xxviii, 165. ----, organic remains in the marl pits of North Carolina, xxvii, 168. Crotalus reliquus, _A. Eaton_, xx, 122.^f _Crosse_, some account of galvanic apparatus of, xxxii, 372; xxxv, 125.^f ----, supposed production of animal life, xxxii, 374^f; xxxiii, 272. ----, production of crystals and certain insects, xxxv, 125.^f ----, Acari of, xxxii, 374^f; xxxv, 125^f; xlix, 227. ----, ----, experiments of _W. H. Weekes_ in the production of, xliii, 395. Crucible, improved, viii, 389. ----, for glass houses, on the manufacture of, xvi, 112. ----, for fusion, xxiii, 384. Crustaceans in Palæozoic rocks, _J. Phillips_, xlii, 326. ----, see farther under ZOOLOGY, _Articulata_. Cryophorus, _Wollaston's_, vii, 140. ----, improved, _R. Hare_, xxxiii, 244.^f Crystals, compound, formation of, _J. D. Dana_, xxx, 275.^f ----, drawing of figures of, _J. D. Dana_, xxxiii, 30.^f ----, models, of mica, xxxviii, 187. ----, a new fluid in, vii, 186. ----, two new fluids in, xii, 214.^f ----, naphtha in, _C. Dewey_, i, 345. ----, pseudomorphous, see _Pseudomorphous_. ----, cause of double refraction in, xxi, 299. ----, with rounded angles and bent, in New York, deductions from, _L. C. Beck_, xlvi, 333. ---- in plants, discovered by _Turpin_, xix, 177; xx, 382. ---- ----, of oxalate of lime, _Turpin_, xxi, 372. ---- ----, _J. W. Bailey_, xlv, 149; xlviii, 17.^f ---- in geodes, facts tending to illustrate the formation of, viii, 282. ---- ----, ibid, _J. D. Dana_, xlix, 52. ----, rotation of, while forming, indicating polarity, as seen under the solar microscope, _B. F. Joslin_, xxxv, 150. ---- of Andalusite from Westford, Mass., xlvi, 381.^f ---- of apatite, bent and rounded, xlv, 143; xlvi, 365.^f ---- of anatase, xlvii, 215.^f ---- of Beaumontite, xlvi, 234.^f ---- of beryl, from Haddam, viii, 395; xl, 401^f; xlvi, 381.^f ---- ----, from Monroe, Ct., bent, xlvi, 366.^f ---- of calc spar, from Rossie, N. Y., _J. D. Dana_, xlvi, 33.^f ---- of chondrodite, xlvi, 381.^f ---- of Christianite, (anorthite,) xi, 261.^f ---- of chromic oxide, xxviii, 396. ---- of Columbite, xvi, 220^f; xvii, 357^f; xxx, 387.^f ---- of Danaite, xlvi, 384.^f ---- of datholite, of Roaring Brook, _J. D. Dana_, xlvi, 380.^f ---- of epidote, from Haddam, Ct., xlvi, 381.^f ---- ----, from Franconia, _C. U. Shepard_, xviii, 129.^f ---- of eremite, _C. U. Shepard_, xxxii, 341. ---- ----, _J. D. Dana_, xxxiii, 70^f; xlv, 402.^f ---- of galena, Rossie, xlvi, 366.^f ---- of Haydenite, xlvi, 379.^f