_Hubbard, O. P._, chemical examination of the bituminous coal of Chesterfield Co., Va., xlii, 369. ----, geological and mineralogical notices, xxxii, 230.^f ----, calcareous rocks at Boonville, N. Y., xxxii, 230. ----, ---- ----, ibid, rhomboidal structure in, xxxii, 232.^f ----, boulders at Boonville, xxxii, 233. ----, locality of crystallized calc spar, Boonville, N. Y., xxxii, 234. ----, ---- of green coccolite and tabular spar, at Boonville, N. Y., xiii, 198; xxxii, 234. ----, on the removal of carbonic acid from wells, xxxviii, 206; xlii, 165. ----, spontaneous combustion in wood ashes, xlii, 165. ----, geological observations on an excursion to the White Mts., numerous trap dykes, minerals, granite veins, &c., xxxiv, 105.^f ----, Third Geological Report of New York, notice of, xxxix, 95. ----, Geological Reports of Ohio, Indiana and Michigan, noticed by, xl, 126. _Huber, F._, life and writings of, xxiii, 117. Hudson river, northern sources of, _W. C. Redfield_, xxxiii, 301.^f ---- ----, fish of, xx, 151. ---- bay, rocks and country in the vicinity of, xvii, 11. _Hudson's_ series of investigations with the barometer, xxiv, 393. Hudsonite, L. C. Beck, xlvi, 32. Human bones, fossil, v, 171. ---- ----, of the præ-historic world, in S. America, xliv, 277. ---- skeleton, fossil, of Guadaloupe, skull of, _J. Moultrie_, xxxii, 361. ---- footprints of the Mississippi valley, in limestone, v, 223^f; xxxiii, 398. ---- ----, ibid, in limestone, _D. D. Owen_, xliii, 14.^f ---- ----, ibid, _W. A. Adams_, xliv, 200. ---- race, stature of, _J. G. St. Hilaire_, xxii, 357. ---- ----, law of increase in stature, _Quetelet_, xxii, 376. ---- ----, varieties of, xiv, 372. ---- ----, singular variety of, in Peru and Bolivia, xxviii, 78. _Humboldt, A._, expedition to Siberia, xvii, 405. ----, on the invention of the mariner's compass, xl, 242. ----, mean height of the continents above the sea, xlix, 397. Humboldtilite, xi, 251.^f Humboldtine, v, 193. _Hume, Sir Abraham_, notice of, xxxvii, 118. Hungary, observations on _Beudant's_ geological travels in, vii, 256. ----, tribe of Scotacks in, v, 384. _Hunt, R._, on the chromatype, xlvi, 396. ----, influence of light on the germination of seeds, xliv, 352. ----, influence of light on the growth of plants, xliv, 352; xlvi, 397. ----, influence of ferro-cyanate of potash on iodide of silver, xlii, 317. Huraulite, analysis of, xix, 371. Huronite, xxx, 241. Huron race of Indians, _S. G. Morton_, xxxviii, 368.^f Hurricane, see _Wind_. _Hutton's_ table of products, errors in, xliii, 116. _Huxham's_ Auroral Register, xxxiii, 297. Hyalite, in Florida, xxv, 165. ----, at West Point, N. Y., xxxii, 87. _Hybernation, I. Lea_, ix, 75. ----, _S. Woodruff_, xxiv, 363. Hydrargillite, _C. Dewey_, iii, 239. Hydrate of magnesia, from Shetland, vii, 365.