INDEX TO VOL. III. 
Azsorpine powers of polished and 
striated metallic plates, on the cause 
of the differences observed in the, 
416. 
Albumen, preparation and composi- 
tion of, 252. 
Ammonia, on combinations of, with 
the volatile chlorides, 32. 
Amphide compounds of cacodyl, on 
the, 284. 
Analytical engine of Mr. C. Babbage, 
account of the, 666; notes on, 691. 
Apparatus for absolute intensity, de- 
scription of an, 517. 
Arago, M., on the chemical action of 
light, 558. 
Atmosphere, on the cause of the elec- 
tric phenomena of the, 377. 
Attractive and repulsive forces, on 
some general propositions relating 
to, 153. 
_ Babbage, C., account of the analytical 
engine invented by, 666. 
Barometric minima, observations on, 
201. 
Becquerel, E., on the constitution of 
the solar spectrum, 537; on the 
chemical action of light, 560. 
Bernhardi, M., on the formation of 
seed without previous impregnation, 
19, 
Boulder-flood, on the period of its oc- 
currence, 110. 
Brande, M., on the cause of storms, 
200, 
Bromide of cacodyl, 305. 
Bryozoa, descriptions of some new 
species of, 357. 
Bunsen, Rud., on the cacodyl series, 
281. 
Cacodyl series, researches on the, 281. 
Calorific radiations, nomenclature for 
the science of, 527. 
reflectors, suggestions for the im- 
provement of, 416. 
Capillary phenomena, on the action 
of the molecular forces in producing, 
564, 578, 
Carnivorous animals, on the process of 
nutrition in, 245. 
. 
Caseine, vegetable, preparation and 
composition of, 249, 
Cauchy, A. L., on the theory of light, 
264. 
Chalk-formation, on numerous animals 
from the, 319, 346. 
Chemical spectrum, observations on 
the, 541. 
Chlorides, volatile, on combinations of 
the, with ammonia, 32. 
Cyanuret of cacodyl, on the, 295. 
Daguerreotype, experiments on, 468 ; — 
on some applications of the, 558. 
Declination, diurnal movement of the, 
603 ; its yearly diminution and 
monthly fluctuation, 605. 
Declinatorium, description of a small, 
508. 
Defiection, magnetic, on a method of 
facilitating the observations of, 
145. 
Differential apparatus for horizontal 
intensity, description of a, 514. 
Dioptric researches of Gauss, abstract 
of some of the principal propositions 
of, 490. 
Dove, H. W., on the law of storms, 
197; on the non-periodie variations 
in the distribution of temperature 
on the surface of the earth, 221. 
Dumas’s, M., theory of substitutions, 
observations on, 46. 
Earth, on the non-periodie variations 
in the distribution of temperature 
on the surface of the, 221; on the 
means of ascertaining the resinous 
induction of the, 380. 
Ehrenberg, Dr. C. G., on animals of 
the chalk formation which still oc- 
cur in a living state, 319, 346. 
Electric phznomena of the atmo- 
sphere, on the cause of the, 377. 
Encke’s comet, calculation of the dis- 
turbances which it experiences from 
Saturn, 589. 
Endlicher, M., on the sexes and gene- 
ration of plants, 1. 
Espy, Mr., on the law of storms, 205, 
Fat, on the formation of, in the animal 
economy, 263. 
