BLA 
Bitter-spar, in Maryland, v, 256. 
, in R. Island, iv, 285. 
, in Vermont, v,272; xvii, 353. 
Bitterness of vegetables, M. Guille- 
min, XXIV, 273. 
Bitumen in stones, xil, 147. 
or petroleum oil spring of Al- 
legany Co., N. Y., xxiii, 97. 
in the valley of the Little Ken- 
awha, xxix, 86; valley of the 
Kenawha, 121; of Sandy river, 
129, 
in N. Jersey, xxxvi, 114. 
from Barbadoes, v, 406. 
of Africa, i, 147. 
, elastic, of France and Eng- 
land, xiv, 371. 
Bituminized wood in the recent era, 
W. M. Carpenter, xxxv, 345; 
xxxvi, 118.f 
, partly silicified, Texas, 
Xxxvii, 216. ; 
Bituminous or organic matter in the 
N. York limestones, L. C. Beck, 
xlv, 335. 
coal; see Coal. 
Black lead; see Graphite. 
Black mountain, Vt., geology of, 
Vi, -d. 
Black sea, anal. of waters of, xx,188. 
, height of, above the 
Caspian, xl, 320. 
, on the shores of, xxxil, 
399. 
Blacking, preparation of, xiii, 163. 
Blagden, Sir Charles, obituary no- 
tice of, 11, 344. 
Blake, E. W., on the forms of cog- 
wheels, vii, 86.f 
——,, blasting rocks, xvii, 134.f 
, theory of the resistance of 
fluids, xxix, 27453 xxx, 359. 
Blake, J. H., meteorological obser- 
vations in 1840, atSan Fernando, 
Cuba, xlii, 292. 
, coal mines of Cuba, xlii, 388. 
, geological and miscellaneous 
notices of the province of ‘lara- 
paca, xliv, 1.f 
Blanc, Mt., journey up, J. Van 
Rensselaer, ii, 1. 
28 
BL O 
Blasting of rocks, danger and rem- 
edies, xvil, 132.f 
, an improved method of, 
by firing several blasts at once, 
with a Leyden jar, xvi, 372.f 
, by using as a plug, a 
cone of wood, E. W. Blake, xvii, 
134.f 
,on the premature ex- 
plosion of powder in, xix, 199. 
, by galvanism, R. Hare, 
xxi,139 ; xxvi, 852! ; xxxviii, 188. 
, H. K. G. Mor- 
gan, Xxxvill, 33. 
Bleaching, remarks on, xv, 64. 
oils, xlvil, 196. 
powder, see Chloride of lime. 
Blende, in Canada, viii, 76. 
,in Connecticut, v, 41, 443, 
xxxill, 162. 
, in Massachusetts, i, 437; vi, 
201. 
, in N. Hampshire, xxxiv, 114. 
, in N. Jersey, v. 30. 
, inN. York, viii, 249 ; ix, 244. 
, western states, ill, 63. 
Blind, New England asylum for, 
oh eae We 
Blind fish, from a cave in Ky., J. 
Wyman, xlv, 94. 
‘Blood, remarks on the circulating 
system, xxvill, 79. 
, rapidity of the circulation of, 
xvi, 388. 
, new mode of analyzing, L. 
Figuier, xlix, 201. 
, coloring matter of, xix, 381. 
, on the iron in, xv, 169. 
——, manganese in, xxi, 370. 
, gases contained in, and on 
respiration, G. Magnus, xxxv, - 
198. 
——, peculiar principle of, xviil, 
148. 
——, mode of preserving, xxi, 370. 
of a dog, Filariz in, xlv, 228. 
Bloodgood, S. D., on the Hudson 
and Mohawk railroad, xxi, 141. 
Blowing machinery of a furnace, 
investigations respecting, by A. 
B. Quimby, xii, 128. 
