HAR 
Hall, J., Western States, general 
account of geology of, xlii, 51. 
Hail, John, on the staining of wood, 
and on medical electricity, ii, 
166. 
Hallowell, B., on the cause of hail 
in warm weather, xv, 361. 
, blue color of sky, twinkling 
of stars, and on the deception as 
to the number in view on a clear 
evening, xv, 360. 
Halos, theory of, H. S. Snell, xlix, 
73.f 
, lunar, West Point, March 20, 
1831, xx, 299. 
, solar, seen in N. York, at 
Cazenovia, J. W. Tyler, xxi, 
189. 
» ——, ibid, in Otsego Co., 
Feb. 1823, xx, 297. 
: , ibid, at Kingston, R. 
H. Bonnycastle, xxx, 186. 
—, , ibid, at West Point, 
A. C. Twining, xxxii, 229. . 
‘ , ibid, New Lebanon, T. 
Kendall, vii, 337.f 
3 , seen in Kentucky, Au- 
gust, 1825, xi, 325.f 
} , seen in Rhode Island, 
September, 1816, xi, 328.f 
: , seen in Tennessee, at 
Jackson, x, 368.f 
Hambato, S. America, account of, 
Xxiv, 382. 
Hamilton, J., on terrestrial magnet- 
ism, xxxvil, 100. 
Hamilton, M., earthquakes of S. 
America, xli, 57. 
Hammer, new mineralogical, 
Hitchcock, vii, 175.£ 
Hansteen’s journey in Siberia, no- 
tice of, xvii, 392. 
Harden, J. M. B., formula for as- 
certaining the weight and volume 
in a mixture of two bodies, xxxvii, 
289. 
E. 
Hare, C., perchloric ether, xl, 50; 
xlil, 63. 
, on the destructive distillation 
of the sulphate of etherine, xxxvi, 
77. 
115 
HAR 
Hare, C., reaction of sulphuric acid 
with the essential oil of hemlock, 
XXxvil, 246. 
Hare, R:, acids and salts, romans 
on the Tein of, xxvii, 63, 67. 
x , classes of, cat, 69. 
, alr pump of a new construc- 
tion, xxxili, 237.£ 
, alkanet, as a substitute for 
litmus, v, 348. 
, ammonia, nitrate, on the pre- 
paring of pure, v, 348. 
, atoms, on the views of Fara- 
day, respecting, xlviil, 247. 
, amphide salts, on the exist- 
ence of radicals in, xlv, 52, 247. 
, barium, strontium and calci- 
um, extrication of, xxxvii, 267; 
xxxvill, 115; xxxix, 362; xl, 
293.6 
——, blasting rocks, by galvanic 
ignition, xxi, 1389; xxvi, 352f; 
xxxvili, 188. 
, blowpipe, improved alcohol, 
vii, 110.f 
» ——, hydrostatic, xi, 135.f 
—-, , strictures on a publica- 
tion entitled Clark’s gas blowpipe, 
ii, 281.f 
—, , oxy-hydrogen, fusion 
of a large amount of platina with, 
xxxill, 195; xxxv, 328. 
, boron, process for evolving, 
ost 189; xxiv, 249.f 
, calorimotor, i, 418f; v, 94. 
; , for igniting platina in 
the galvano-ignition apparatus, 
xxxil, 284.f 
, carbon, on the fusion of, in 
reply to L. Vanuxem, viii, 288 ; x, 
111. 
; » experiments on the fu- 
sion of, x, 118. 
> ——:. ——, remarks 
xxxviii, 190. 
, carbonic acid, apparatus for 
exhibiting some of the properties 
of, xiv, 358.f 
, carbonic oxide, apparatus for 
separating from carbonic acid, 
XXiv, 252.f 
on, 
