Ss IB 
Shooting stars, Olmsted, D., re- 
marks in reply to objections to his 
theory of, xxix, 380; xxx, 370./ 
» Quetelet, report of de- 
sultory remarks at the British 
Association of 1833, xxviii, 59. 
; , general average 
per hour, xxxv, 365. 
; Twining, A. €:, on 
the meteors of November, 1838, 
xxvi, 3820/ ;—1834, xxvii, 339. 
, examination of 
D. Olmsted’s views on, xxvi, 321. 
: , time and maxi- 
mum of shower, November,1833, 
XXv1, 3238. 
; , the radiant point 
fixed independent of the earth’s 
rotation, xxvi, 3825, 3473; xxvil, 
339. 
, nature and cause 
3 
of, Xxvi, 335. 
é , height of sever- 
al calculated, xxvi, 387.f 
, velocity of, xxvl, 
9 
346. 
‘ , character of or- 
bital motion and period of, xxvi, 
348, 349. 
: , Walker, S. C., 
on the showers of, in August, 
xl, 51; xl, 401. 
: , ibid, radiant 
point and other observations, xl, 
bile 
Shortrede, R., logarithmic tables of, 
noticed, xviii, 208. 
Shower of red matter like blood in 
Tennessee, a hoax, xliv, 216, 
(see xli, 403.) 
Siamese twins, an account of, J. 
C. Warren, xvii, 212.f 
Sibbald, R., notice of, with an enu- 
meration of his works, xxxvii, 138. 
Siberia, steppes, xvil, 23. 
, depth of the frozen ground 
in, xxxvi, 210. 
—, temperature of the ground 
In, Xxxvi, 205. 
, Notice of Humboldt’s expe- 
dition to, xvii, 405. 
236 
| 
SIL 
\Siberian elm, notice of, xx, 377. 
Sibley, J., fact from a letter by, re- 
lating to the Texas meteoric 
iron, vill, 221. 
Sicily, earthquakes of 1823, ix, 
216. 
, geological structure of, F. 
Ferrara, viii, 201. 
; marbles of, vil, 208. 
——,, minerals of, viii, 203. 
—, geology of, C. Daubeny, x, 
230.f 
» voleanic character of, xiii, 
272. 
, fountain of Cyana in, xxvii, 
82. 
Sida abutilon, affording a material 
for cordage, xxi, 37. 
Sidero-graphite, J. Torrey, ii, 176, 
370. 
Sideroscope, xv, 177. 
Stebold’s Flora Japonica, noticed, 
Xxxix, 175. 
Sienite, see Syenite. 
Sigillaria, generic characters, vil, 
180. 
marineria, xxxi, 30.f 
in the coal fields near Liver- 
pool, xlv, 403. 
, remarks on the relation of, to 
Stigmarie, xlix, 227. 
Signals, iii, 382. 
, telegraphic, by rockets, v, 
189. 
Signs, observations on the language 
of, vill, 348. 
Silene axillaris, vil, 62. 
regia, xi, 182. 
Silex, fusion of, ii, 292. 
, solubility of, xiv, 385; xli, 
60 
, gelatinous, Guillemin, xiv, 
391. 
, In solution, in geodes, viii, 
282. 
——, ——, ibid, G. Bischof, xlix 
396. 
——, hydrate of, xv, 390. 
in plants, xxxiv, 27. 
Siliceous buhr millstone deposits of 
Ohio, xxix, 142. 
>) 
