L1G 
Lichen rocella, coloring matter of,| 
xvill, 151. 
Liebig, J., on creosote, xxvii, 131. 
and Wohler, on the radical of 
benzoic acid, xxvi, 261.f 
-——, on bitter almond oil, xxvi, 263. 
Life, on the functions of vegetable, 
G. T. Burnett, xxi, 153. 
, mean term of, among the Ro- 
mans, xvii, 188. 
, mean term of, in France and 
England, xvii, 188. 
, probability of, from registers 
kept at Geneva, xv, 187. 
of a molluscous animal, sin- 
gular preservation of, xxvill, 355. 
apparatus, notice of Murray’s, 
xxvill, 70. 
preservers, xiv, 189. 
Lightand heat, S. Morey, 11,118,122 
and magnetism, 
between, G. Gibbs, i, 89. 
, observations and experiments 
on, S. Adams, xl, 123. 
, absorption of, by the atmo- 
sphere, xlvi, 201. 
, action of, chemical, xvii, 876. 
, in producing chemical 
9 
changes, J. W. Dobereiner, xxii,) 
352. 
4 , In decomposing car- 
bonie acid and alkaline carbo- 
nates, J. W. Draper, xlvi, 398. 
; , on the color and move- 
ment of plants, D. P. Gardner, 
xlvi, Lf 
“5 , on an elementary sub- 
stance, producing, as supposed, a 
change, J. W. Draper, x\vi, 390. 
A , on an iodized silver 
plate, producing electricity, xvii, 
190. 
v] 
chemical, 
of solar 
xxxl, 260. 
spectrum, 
, on sensi- 
J. F. W. Herschel, 
9 
tive paper, 
xxxviil, 110. 
——, —— of gaseous and other me- 
dia on the solar spectrum, xlii, 157. 
, blanching effects of, obviated, 
Xxxv, 338. 
connexion| 
142 
Luh .G 
Light, halo of, which surrounds all 
bodies, Mary Griffith, xxviii, 22. 
, influence of, on germination, 
R. Hunt, xliv, 352. 
; , on the growth of plants, 
xliv, 852; xlvi, 397. 
; ee te of, how measured, 
, 184. 
, new case of interference of, 
Powell, xxxviil, 107. 
, apparatus for experiments on 
inflection and interference of, E. 
S. Snell, xlix, 26.f 
, latent, J. W. Draper, xliv, 
202. 
lines seen at regular intervals, 
a new property, D. Brewster, 
Xxxiv, 20. 
, magnetic influence of the vi- 
olet ray of, xvii, 171. 
of the solar rays, 
9 
xi, 188. 
, on the deflection of, xviii, 1'76. 
» monochromatic, for micro- 
scopic observations, xii, 190. 
, oxy-hydrogen, for light- hou- 
ses, improvement in, by. use of 
sulphate of lime, xxvill, 355. 
, a new kind of polarity in ho- 
mogeneous, D. Brewster, xxxv, 
292. 
——.,, polarization of, by reflection, 
D. Brewster, xxii, 277.£ 
—, , by refraction, laws of, 
D. Brewster, xxiii, 225.f 
; , elliptic, of reflected, 
Powell, xliv, 171; xlvi, 390. 
; , rings produced in spe- 
cimens of decomposed glass, D. 
Brewster, xl, 325. 
, on the passage of, through 
small apertures, and on the cause 
of prismatic analysis, C. C. Con- 
well, xx, 850. 
, on the production of, R. 
a i, 172. 
, J. L. Sullivan, i, 91.f 
——, ——.,, from quicklime, xiv, 
385. 
‘ , ibid, for geodetical op- 
erations, xill, 188. 
