HUR 
Hudson’s series of investigations 
with the barometer, xxiv, 393. 
Hudsonite, L. C. Beck, xlvi, 32. 
Human bones, fossil, v, 171. 
of the pre-historic world, 
in 8. America, xliv, 277. 
skeleton, fossil, of Guada- 
loupe, skull of, J. Moultrie, 
Xxxil, 361. 
footprints of the Mississippi 
valley, in limestone, v, 228!; 
Xxxili, 398. 
, ibid, in limestone, D. 
D. Owen, xiii, 14.f 
, ibid, W. A. Adams, 
xliv, 200. 
race, stature of, J. G. St. 
Hilaire, xxii, 357. 
, law of increase 
stature, Quetelet, xxii, 376. 
, varieties of, xiv, 372. 
, Singular variety of, in 
Peru and Bolivia, xxviil, 78. 
Humboldt, A.,expedition to Siberia, 
xvil, 405. 
, on the invention of the mari- 
ner’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, 
xxxvul, 118. 
Hungary, observations on Beudant’s 
- geological travels in, vil, 256. 
, tribe of Scotacks in, v, 384. 
Hunt, R., on the chromatype, xlvi, 
396. 
, influence of light on the ger- 
mination 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, xlil, 
317. 
Huraulite, analysis of, xix, 371. 
Huronite, xxx, 241. 
Huron race of Indians, S. G. Mor- 
ton, xxxvill, 368.f 
Hurricane, see Wind. 
in 
16 
125 
H YD 
Hutton’s table of products, errors 
in, xlili, 116. 
Huxham’s Auroral Register, xxxiil, 
298 
Hyalite, in Florida, xxv, 165. 
, at West Point, N. Y.,. xxxil, 
87. 
Hybernation, I. Lea, ix, 75. 
, S. Woodruff, xxiv, 363. 
Hydrargillite, C. Dewey, ii, 239. 
Hydrate of magnesia, from Shet- 
land, vil, 365. 
Hydraulic cement in N. York State, 
XXXvl, 45. 
limestones of N. York, xxxix, 
96; xlvi, 29. 
in the Appalachian 
chain, xxxvil, 381. 
, magnesian character of, 
Xxxvil, 381. 
machine, new, li, 345. 
ram, new, ill, 381. 
volcano, xxii, 358. 
Hydriodic acid, preparation of, xvi, 
383 ; xlvii, 192. 
Hydroboracite, analysis of, xxviii, 
394. 
Hydrobromic acid, xlvii, 192. 
Hydro-carbo-sulphuric acid, how 
prepared, vil, 187. 
Hydrochloric acid, notice of experi- 
ments with reference to, Macaire 
and Dela Rive, xi, 393. 
, mode of preparing pure, 
from muriatic acid of commerce, 
R. Hare, xxxix, 371. 
, fumigation with, at 
Plattsburgh, in 1819, vii, 200. 
, condensation of, M. 
Faraday, vil, 357. 
Hydrocyanic acid, F. Magendie on, 
ii, 81. 
——, memoir on, B. L. Oli- 
ver, ill, 182. 
b) 
, Orfila, xviii, 157. 
, effect of muriatic and 
sulphuric acids on, xviil, 146. 
—— ——, apparatus for the evo- 
lution of, R. Hare, xxix, 244.£ 
, extraordinary produc- 
tion of, A. A. Hayes, xviii, 201. 
