INDEX. 
603 
Electric force traversing interposed media, 
on the direction and propagation of the, 
185. 
Electrodynamic induction, 200, 551. 
Electromotive forces, differences of the 
on the contact of two metals with two 
fluids, 495. 
Electromotive power of heat, on the, 451. 
Electrotypes, on the production of, 530. 
Elementary bodies, on the galvanic pro- 
perties of the, 422. 
Eliminating (x), a rule for absolutely, 132. 
Elimination and derivation by a process 
of mere inspection, 132. 
Embryology, Dr. Barry’s researches in, 
526. 
Encke’s Comet, on the variation of the 
apparent diameter of, 150. 
England, Copernican theory in, on the re- 
ception of the, 461. 
Equations, combination of the given, 40; 
leading theorem, 40 ; inferences from 
the, 40 ; of co-existence, statement of 
the, 40, 
Eudialyte, on the form of, 477. 
Exosraose, mechanical, with reference to 
determining the magnitude of material 
particles, 10. 
Eyes, on single vision with two, 599. 
Faraday’s (Prof.) experimental researches 
in electricity, 16th series, 329; 17th 
series, 336. 
Fermentation, on the supposed formation 
of inorganic elements during, 251. 
Ferriter’s Cove, fossils discovered at, 167. 
Ferrocyanide of potassium, on a new com- 
pound of, with cyanide of mercury, 128. 
Films, coloured, produced by electro-che- 
mical agency and by heat, 52. 
Fluids, on galvanic circuits composed of 
two, 485. 
Fluorine, Mr. Knox’s researches on, 192; 
on a compound of, with selenium 194. 
Forbes (J. D.), letter to Richard Taylor, 
Esq. on two papers in the L. & E. Phil. 
Mag. for Jan. 1840, 102; on an appa- 
rent inversion of perspective in viewing 
objects with a telescope, 506. 
French cast irons, description of, prepared 
near Alais, 571. 
Freshwater deposits, on the, composing the 
mudcliffs of E. Norfolk, 345. 
Galle(M.) on the discovery of a comet by, 
151. 
Galvanic circuits composed of two fluids, 
and of two metals, not in contact, 485. 
Galvanic series formed of zinc and inac- 
tive iron, 1 15. 
Galvanism, chemical and contact theories 
of, 485. 
Gas, pond, M. Persoz on, 339. 
Gassiot (J. P.) on obtaining the voltaic 
spark before the circuit is completed, 
594; letter to Mr. Lubbock on Nobili’s 
plate of colours, 596. 
Gay Lussac (M.), analyses of four sorts of 
iron by, 522. 
Geology : — on the geology of Devon and 
Cornwall, 59 ; on the older stratified 
rocks near Killarney and Dublin, 1 63 ; 
fossils discovered at Ferriter’s Cove, 
167 ; on the boulder formation and 
freshwater deposits of E. Norfolk, 345.; 
Paludina minuta, 354 ; fish, 3.54 ; in- 
sects, 354; mammalia, 355; plants, 355 ; 
protuberances of chalk near Trimming- 
ham, 355 ; freshwater strata of Runton, 
362 ; shells at 363 ; crag at, 363 ; cliff's 
between Cromer and Sherri ngham, 
365; crag near Weybourne, 370; shells 
obtained from the, 370; mud cliffs of 
E. Norfolk, 371 ; Norwich crag, 372; 
shells found in, 372 ; fossils in the 
clay state tract of the Ardennes, 389 ; 
fossils common to the Eifel limestone, 
399 ; on two ores from the Skut- 
teruder mine, 482. 
Geological Society, proceedings of the, 148. 
Germany, Norway and Russia, on mag- 
netic observations in, 598. 
Glass, on modifications of the powers of 
heat and light, when transmitted through, 
467. 
Gravid uterus, on the nerves of the, 590. 
Griffith (R.) on the order of succession of 
the older stratified rocks near Killarney 
and Dublin, 163. 
Grove, (W. R. ) on voltaic reaction, 338 ; 
on some pheenomena of the voltaic dis- 
ruptive discharge, 478. 
Gulliver (G.) on the blood corpuscles or 
red disks of the mammiferous animals, 
23, 105, 195 ; on the blood corpuscles 
of certain species of the genus Cervus, 
599. 
Gutch (J. W. G.) on meteorological phae- 
nomena observed at Swansea, 87. 
Hail, on a remarkable fall of, 85. 
Halliwell (J. O.) on the treatise of BoC- 
tius de Geometria on numerical contrac- 
tions, 51 ; on the Boetian contractions, 
with reference to the explanation given 
by M. Chasles, 136 ; note on the Boe- 
tian contractions, 221 ; on the histoiy 
of the inductive sciences, 461. 
Hardy (Peter) on a new and general no- 
tation, applicable to the doctrine of life 
contingencies, 598. 
Harris (W. S.) on lightning conductors, 
and effects of, lightning on certain ships 
of the British Navy ; being a further ex- 
amination of Mr. Sturgeon’s memoir on 
marine lightning conductors, 116, 404; 
on the electrical discharge, 404. 
