604 
INDEX, 
Hawkins (Th.) on galvanic series formed 
of zinc and inactive iron, 115. 
Haydenite, 155; and Couzeranite, on, 
175. 
Heat and light, on modifications of the 
powers of, when transmitted through 
glass, 467. 
Heat of vapours, and on astronomical re- 
fractions, 434 ; general expressions, 438. 
Heat, on the electromotive power of, 451. 
Henderson (T.) on the parallax of Sirius, 
148. 
Henry (Prof.), contributions to electricity 
and magnetism: No. III. on electro- 
dynamic induction, 200, 254, 551 ; 
production of induced currents of the 
different orders from ordinary electri- 
city, 551. 
Herschel (Sir J. W. F.), letter to, from M. 
Valz, on the variation of the apparent 
diameter of Encke’s comet, 150 ; on ob- 
taining an increased quantity of light 
from a common Argand oil lamp, 194 ; 
on the solar spectrum and photometry, 
239 ; on the chemical action of the rays 
of the solar spectrum, 331. 
Howard (Luke) on the wet summer of 
1839, 600. 
Human body, on arsenic contained natu- 
rally in the, 341. 
Hunt ( R.) on the permeability of various 
bodies to the chemical rays, 138 ; results 
arrived at, 141 ; on light which has 
permeated coloured media, and on the 
chemical action of the solar spectrum, 
267. 
Hyacinth, H.M. Ship, effect of lightning 
on, 405. 
Hydrocarburet of bromine, 236. 
Hydrochloric acid, ascendency of water 
over, 537. 
Hydrogen of acetates, carburetted, action 
of chlorine on the, 235. 
India, on the temperature of the sea and 
air, during a voyage to, 176. 
Induction, on electro-dynamic, 200 ; of 
a current on itself, conditions which 
influence the, 203 ; of secondary cur- 
rents at a distance, on the, 254. 
Inductive sciences, on the history of the, 
461. 
Inorganic elements during fermentation, 
on the supposed formation of, 251. 
Iodide of potassium, on a pseudomor- 
phous variety of, 221. 
Ireland, on the mineral structure of the 
south of, 276, 388. 
lion, cast, steel, and malleable iron, on the 
different species of, 44, 297 ; zinc and 
inactive, on galvanic series formed of, 
115; decomposition of the neutral sul- 
phate of the peroxide of, by boiling its 
solution, 130; anomalous electric con- 
dition of, 142; precipitation of, by zinc, 
235; natural products which originate 
from the action of the atmosphere on 
iron pyrites, 265 ; analysis of four sorts 
of, 522. 
Isere, de 1’, analysis of iron from, 522. 
Ivory (J.) on the theory of the astronomi- 
cal refractions, 89. 
Jeffreys (Julius) on mechanical exosraose 
with reference to determining the mag- 
nitude of material particles, 10. 
Jones (T. Wharton) on single vision with 
two eyes, 599. 
Kane (Dr. R.) on a new compound of 
ferrocyanide of potassium, with cyanide 
of mercury, 128 ; on a pseudomorphous 
variety of the iodide of potassium, 223 ; 
on the compounds derived from the 
stearopten of oil of peppermint, 418. 
Killarney and Dublin, on the order of 
succession of the older stratified rocks 
near, 163. 
Knight’s move at chess, on the problem of 
the, 306, 498. 
Knox (G. J.) on the direction and mode 
of propagation of the electric force tra- 
versing interposed media, 185; re- 
searches on fluorine, 192. 
Kreil (M.), letter from, to M. Kupffer, on 
magnetic observations at Milan, 241, 
Kupffer (M.), letter to, from M. Kreil, 
on magnetic observations at Milan, 241. 
La Caille’s arc of the meridian, 394. 
Lead, chromate of, on the reduction of, 
532. 
Lee (Dr.) on the nerves of the gravid 
uterus, 590. 
Lempriere (M.), meteorological register 
kept at Port Arthur, 600. 
Letter barometer, 79. 
Liege and Namur, species of coral found 
in the carboniferous limestone of, 390. 
Life contingencies, on a new and general 
notation, applicable to the doctrine of, 
398. 
Light of the sun, experiments made in the 
south of Virginia on the, 81. 
Light : — undulatory hypothesis of, experi' 
ment proposed by M. Arago, as a test 
of the accuracy of the, 157, 181; ab- 
sorption of, 181 ; on obtaining an in- 
creased quantity of, from a common 
Argand oil lamp, 194 ; on interferences 
as an experlmentum crucis as to the na- 
ture of, 380. 
Lightning conductors, 116; effects of 
lightning on certain ships in H. M. 
Navy, 117, 404; on the Athol, 406; 
on (he Snake, 407 ; on the spire of a 
church at Kingsbridge, 408 ; on the 
Buzzard brigantine, 408; on the Fox rc- 
