sPO 
Spinning machine, worked by mice, 
in Scotland, viii, 371. 
Spiral of Avenimedees A. B. Quin- 
by, ix, 316.f 
conductor, on the action of, 
J. Henry, xxviii, 329. 
Spirits, evaporation of, ii, 376. 
Spitzbergen, some account of, xvi, 
Spix and Martius, reception of, at 
Munich, iv, 383. 
Spodumene in Massachusetts, vi, 
225 and vii, 30 (called white Au- 
gite); vill, 120, 243; ix, 20; 
xiv, 220; xx, 170. 
from Sweden, vii, 371. 
Sponges on the shores of Long Isl- 
and, C. S. Rafinesque, i, 149. 
Spongia patera, or Neptune’s gob- 
let, A. A. Gould, xxxvi, 386. 
Spongy platina, Dodereiner’s dis- 
covery and researches, vii, 387 ; 
xviil, 151. 
—, J. Liebig on, xviil, 
398. 
, action of, prevented by 
certain gases, xxxi, 348. 
‘ ,Kuhlmann,xxxvil, 
198. 
Spontaneous combustion, instance 
of, ii, 883; v, 201; xxi, 161; 
xxvil, 178; xxxiiil, 147. 
in wood ashes, O. P. 
Hubbard, xlii, 165. 
, remarks on, J. Mease, 
Xxxiii, 147, 199. 
a coal, xxxili, 147. 
of ee cotton, &c. 
with linseed oil, xxxil, 148. 
of oatmeal, xxxili, 150. 
of lampblack, xxxiii, 
rs 
150. 
—— -— of horse-manure, xxxiil, 
151. 
of coal, xxxili, 200. 
—— —— of wood, xxxv, 144. 
generation, remarks on the 
theory of, C. A. Lee, xxxix, 
289. 
Spots on the sun, first observations 
on, xxiv, 204, 
246 s 
PR 
Spots on the sun in 1825, connec- 
tion of, with the temperature, xii, 
199: 
, In 1837, observations 
on, D. Olmsted, xxxiii, 393.f 
, heat of, J. Henry, xlix, 
405. ; 
Spring, monograph by, on the Ly- 
copodiacee, xliv, 196. 
Springs and fountains, on the 
origin of, G. W. Long, xvii, 
336. 
, remarks on Mr. G. W. Long’ s 
paper on, xviil, 379. 
} geographical, geological and 
physical considerations on, H. de 
Thury, xviii, 267.£ 
, freshwater, J. du Commun, 
xiv, 174.£ 
» spouting fountain near Un- 
cino, Naples, xxv, 194. 
, ibid, analysis of water of, 
xxv, 195. 
, acidulous or carbonated, New 
York, xxxvi, 8. 
, burning, Ohio, xlix, 406. 
, carburetted hydrogen, New 
York, xxxvi, 6. 
‘ , In the Ohio val- 
ley, xxiv, 61. 
, chalybeate, at Litchfield, Ct., 
ill, 235. 
oe , at Catskill, N. Y., iii, 
236. 
5 , remarkable, in Scot- 
land, xx, 384. 
, hot, see Springs, thermal. 
, Intermittent, near Pittsburgh, 
Pa., cause of, xlviii, 400. 
, mineral, J. Anglada’s deduc- 
tions respecting, v, 187. 
: water from Azores, 
analysis of, C. T. Jackson, xxxi, 
94, 96. 
W. 
, hear Albany, 
Meade, xili, 145. 
, of Carlsbad, vii, 185. 
, of Florida, xxxv, 51. 
, in Illinois, xxxiv, 157. 
, in Massachusetts, viii, 
31; xxii, 47. 
