BRO 
Brewster, D., on the action of sec- 
ond surfaces of transparent plates 
upon light, xxiii, 28.f 
, laws of the polarization of, 
light by refraction, xxili, 225f. 
, a new property of light, 
xxxiv, 20. 
, a new kind of polarity in ho- 
mogeneous light, xxxv, 292. 
, new discoveries with the spec- 
trum, xliv, 163, 164. 
, dichroism of some palladio- 
chlorides, xliv, 165. 
, on the cause of musce voli- 
tantes, xl, 333. 
, on the decomposition of glass, 
AQ 
and on the polarization of decom-} 
posed glass, xl, 324, 325. 
, on the line of visible direc- 
tion, along the axis of vision, xl, 
334. 
, cause of increase of color 
when objects are seen with the 
head inverted, xl, 343. 
, action of gaseous and other 
media on the solar spectrum 
xlii, 157. 
Brewster’s (Gilbert) frame for spin- 
ning wool, notice of, x, 130. 
Brewsterite, xx, 198. 
Bricks of the ancients, xxvi, 234. 
Xxxvi, Zi: 
made by a press, vi, 396. 
, use of anthracite in the ma- 
king of, W. Meade, xviii, 118. 
, fire, made at Bennington, Vt., 
xxx! 19S: yxxxin, 202. 
Bridge-building, Town’s new mode 
of, iti, 158f; xxxviii, 276.f 
Bridge, description of, G. W. Long, 
xviii, 123.f 
, chain, in progress, over the 
Menai, an arm of the Irish sea, 
vi, 384. 
Brines, see Sali and Springs. 
Bringier, L., geology, mineralogy, 
aboriginal inhabitants, &c. of the 
regions of the Mississippi, ili, 15. 
Bromine, discovery of, by M. Bal- 
ard, xii, 198. 
made near Jamaica, N. Y., 
BRO 
Bromine, nature of, xili, 398. 
,hew compounds of, 
386. 
XIV, 
——,, preparation of, xviii, 154. 
and iodine, atomic weight of, 
Berzelius, xix, 383. 
, hydrate of, xx, 194. 
combinations of, C. Léwig, 
Xvill, 153.,-.° 
—w— and iodine in mineral waters, 
remarks on, Prof. Daubeny, xxi, 
366. 
and iodine in the Baltic, xix, 
382. : 
in the Salina brines and Sar- 
atoga waters, xvill, 142. 
in the Kenawha waters, xviil, 
260. 
in the Hingham salt works, 
Mass., xx, 161. 
and iodine in the salt springs 
at Athens, Ohio, W. W. Mather, 
> Ube ad 
Brongniart, Al., miscellaneous ge- 
ological and mineralogical obser- 
vations, ill, 216. 
, on the art of pottery and vit- 
rification, new work of, xxxi, 134. 
, on organized remains, notice 
of, i, 71; iv, 396. 
, seven classes of rocks, xxxix, 
149. 
, zoological characters of rocks, 
and the application of these char- 
acters to determining some strata 
of the chalk era, vill, 213. 
Brongniart,Ad.,on the nature of the 
vegetables of the earth at different 
epochs of its formation, xxxiv,315, 
Bronzing iron and gun barrels, 
method of, xxx, 173. 
Bronzite, analysis of, (Seybertite,) 
T. G. Clemson, xxiv, 171. 
, locality of, in New York, xvi, 
185 5 xxi, 327. 
‘Brookite, xvill, 392. 
Brown, S., substance accompany- 
ing the native nitre of Kentucky, 
i, 146. 
Brown, production of silicon from 
paracyanogen, xli, 208, 
