BAL 
Bailey, J. W., monstrous flower of, 
Orchis spectabilis, xxxv, 117.f 
, on yellow showers of pollen, 
xlii, 195.f 
, on a curious fungus, Crateri- 
um pyriforme, xlii, 195. 
, on the crystals in the tissues 
of plants, xlv, 149; xlvili, 17.f 
, fossil polythalamia from the 
upper Mississippi and Missouri, 
xli, 400.f 
abla , in the U. States, 
xlviii, 340.f 
, on fossil infusoria, in peat 
23 
earth, West Point, N. Y., xxxv, 
118.f 
, infusoria of the family Bacil- 
laria, xli, 2846; xlii, 88f; xlili, 
821!; localities, xlii, 828, 329.f 
; from Oregon, the Ber- 
mudas, Virginia and Maryland, 
with an extended catalogue, xlviil, 
321.6 
4 of New Haven harbor, 
xlviii, 337.f 
of Charleston harbor, 
>) 
xlvili, 338.£ 
; of N.Scotia,xlviti, 339. 
, —— with bones of Mastodon, 
xlviil, 339. 
; from Virginia, xlv, 313; 
xlvi, 137,f 800; xlviii, 330. 
5 from Maryland, xlvi, 
137f; xlviii, 330. 
Baird, W. M. and S. F., list of 
birds found near Carlisle, Penn., 
xlvi, 261. 
, two new species of ‘Tyrannu- 
la, xlvi, 273. 
Baker, G., vibrations of a mercurial 
pendulum, xlvi, 156. 
Baking, a machine for accelerating 
fermentation of flour, ix, 198. 
Balance, application of the principle 
of, to milking, churning, &c., H. 
Strait, xxvii, 92! 
Balance beam, Patten’s, ix, 92.f 
Balande’s collections of objects in 
natural history in Africa, iv, 373. 
Baldwin, Wm., two new species of| 
Rottbollia, i, 355. 
BAR 
Ball, J., remarks upon the geology 
and features of the country west 
of the Rocky Mountains, xxviii, 1. 
Bali’s cave, Schoharie, notice of, 
XXVIl, 368. 
Balloon with rarefied air, xii, 372. 
, effect of solar heat in raising, 
J. Rae, xxxiii, 196. 
, principles of aerial navigation, 
H Strait, xxv, 15.f 
, 2 means of making meteoro- 
logical observations, xlii, 150. 
, observations during an ascent 
of, by Eugene Robertson, xii, 166, 
325. 
Banks, J., herbarium of, x], 9. 
‘Bare Hills, Maryland, H. H. Hay- 
den, xxiv, 349.f 
Barium, extrication of, R. Hare, 
Xxxvil, 267 5 xxxvill, 1153 xxxix, 
362. 
, method of preparing the deu- 
toxide of, xvi, 395. 
Bark, Peruvian, experiments on, by 
G. W. Carpenter, ix, 363. 
Barlow, P., instruments for illustra- 
ting the effects of electro-magnet- 
ism, v, 396.f 
Barnard, F. A. P., aurora borealis 
of Nov. 14, 1837, xxxiv, 267. 
, Improvement in the Daguer- 
rotype process, xli, 352. 
Barnes, D. H., geological section 
of the Canaan Mt., N. Y., v, 8. 
, on some doubtful reptiles of 
North America, xili, 66. 
, notice respecting magnetic 
polarity, xii, 70. 
: , reply to, xiv, 121. 
Barnes, D. W., on the genera Unio 
and Alasmodonta, vi, 107,f 258.f 
, new species of Chiton, vii, 
69.f 
Barometer, construction of, in Amer- 
ica, J. Green, xxvil, 292. 
, new construction of, J. LZ. 
Riddell, xxvii, 223.f 
, improvement of, C. F. Du- 
rant, xxvii, 97.f 
, new form of, J. H. Alexan- 
der, xlv, 233.f 
