RAI 
Railway iron, remarks on, D. Mu- 
shet, xxxiv, 15. 
Rain, amount of, at different Berets 
in the atmosphere, Xxix, 354, 
,in 8. W. of Ireland, 
PF: anor xlvi, 394. 
> ——, in the Ghats of West- 
ern India, xxxviii, 103. 
» mean annual amount of, at 
Perth, Scotland, xl, 342. 
» excessive at Genoa and else- 
where, J. D. Forbes, xl, 326. 
at Paris, in 1828, ix, 194. 
, register of, at Hudson, Ohio, 
E. Loomis, xli, 828; xlix, 282. 
—, ,at Montreal, 1886- 
1840, J. S. McCord, xli, 331. 
at Westchester, Penn.,amount 
for several years, W. Darlington, 
vi, 326. 
, register for ten years, 
KIM, 20s 
, at New Fane, Vt., 1828, ’24, 
M. Field, viii, 306. 
, tropical, iv, 375. 
, season of, in Columbia, South 
America, R. Wright, xxxvii, 2. 
from a clear sky, instances of, 
xxxvi, 178. 
, Rowall’s theory of, xli, 40. 
, remarks on, W. C. Redfield, 
Xxxill, 54. 
, red, i, 309. 
» ——, inTennessee,G. Troost, 
xli, 403. 
: J , 2 hoax, xliv, 216. 
of mollusca, xxx, 187. 
of fish, xli, 40. 
of grain, xli, 40. 
water, contents of, xv, 181, 
185. 
, see farther under Meteorol- 
ogy. 
Rain-gauge, improved, G. Chilton, 
vil, 3826.f 
, conical, 
321. 
, used in New York state, xxv, 
267.f 
——, globular, of Robinson, xlii, 
159. 
S. De Witt, 
XXil, 
27 
213 
RAT 
Rain-gauge, A. D. Bache, on the 
effect of deflected currents of 
air on the results with, xxxv, 
287. 
Rain-marks in sandstone, W. Buck- 
land, xxxv, 308. 
-—., at Storeton Hill, 
ham, xxxvil, 371. 
in the new red sandstone of 
New Jersey, W. C. Redfield, 
xiii, 172; xliv, 186; xlv, 315. 
in the rocks of the Con- 
necticut valley, C. Lyell, xlv, 
394. 
in the Connecticut valley sand- 
stone, J. Deane, xlix, 213. 
in the Potsdam sandstone, E. 
Emmons, xlv, 316. 
Rainbow, different brilliancy of the 
_ primary and secondary, xxi, 379. 
, supernumerary, A. C. Twin- 
ing, XXXil, 227. 
——, accompanied with five sup- 
plementary bows, D. Brewster, 
xl, 344, 
» an acoustic, xxi, 381]. 
Rainey, P., on the dry-rot, xxxiv, 
169. 
Raining trees, notice of, xv, 170. 
Rains, G. W., on the generation of 
statical electricity by the elec- 
trical machine, xlix, 93.f 
Raleigh’s tyfoon of 1835, xxxv,210; 
Xxxvi, 59. 
Ram, hydraulic, iii, 381. 
Rambles of a naturalist, xxv, 425. 
Ramond, on the vegetation of the 
Pyrenees, xiv, 377. 
Rana, species of, x, 52; xi, 273. 
Raphael tapestries, effect of light 
and air in restoring the colors of, 
XXXxvil, 244. 
Rapids, navigation of, vil, 175. 
Rask, notice of, iv, 383. 
Rat, pouched, of Canada, iv, 1838. 
, mode of destroying, xxiv, 
205, 
Rational expression for sines, tan- 
gents and secants, D. Gould, xxii, 
392. 
Rats, habits of, xlyi, 242. 
Cunning- 
