56 



GENERAL INDEX OF VOLS. 1 12 OF THE 



of, xi. 150 ; circuit, on the rotation of, 

 iv. 13. 



Voltaic combinations, observations on, 

 ix. 376 ; xi. 89 ; xii. 364 ; peculiar vol- 

 taic condition of iron, ix. 53, 122; 

 X. 133, 172, 267, 276, 425, 428 ; action 

 of electricity in, x. 281 ; conditions 

 of iron and bismuth, xii. 48 ; relations 

 of certain peroxides, platina, and in- 

 active iron, xii. 225, 



electricity, ix. 484 ; due to chemical 



action, and not to contact, ix. 60 ; on 

 the phaenomena and laws of action of, 

 xi. 68 ; on the use of sulphate of cop- 

 per for exciting, xi. 145 ; explanation 

 of the principles upon which the che- 

 mical theory of, is founded, xi. 274. 



pile, theorj' of the, xi. 285 ; tensile 



effects of, xi. 288 ; dynamic effects of 

 the, xi. 290 ; circumstances which af- 

 fect the power of the, xi. 291 ; results 

 arrived at, xi. 293, 294 ; results ob- 

 tained by Breguet's metalhc helix, xi. 

 298 ; summary of, xi. 299. 



Von Hoff (M.), notice of, xii. 439-. 



Vultur aura, habits of, xii. 447. 



Vulture, habits of the, x. 479. 



w 



,- , H. M., improvement in Say's in- 

 strument for taking specific gra- 

 vities, V. 203. 



Wagner (R.), on the compound eyes of 

 insects, viii. 202. 



Wales, on the old red sandstone of, iv. 

 228. 



Walford (E. B.), subsidiary hypothesis to 

 the electro-chemical theory of Sir H. 

 Davy, viii. 170. 



Walker (A.) on the cause of the direc. 

 tion of continents, mountain chains, 

 migrations, civilization, &c., iii. 426; 

 on the mountain chains of Europe and 

 Asia, reply to, iv. 1. 



Walter (M.) on the bichromate of per- 

 chloride of chrome, xii. 83. 



Walton (Rev. W.) on the helm wind, x. 

 221. 



Ward (F. 0.), physiological remarks on 

 the motion of the arm, ix. 411, 534. 



■ (N. B.) on the reproduction of the 



fronds of Laminaria digitata, xii. 96. 



Wardrop (J.) on the influence of the re- 

 spiratory organs, vii. 212. 



Warming and ventilating apartments, 

 modes of, x. 64. 



Warrington (R.) on chemical symbols, i. 

 181. 



Wartmann (M.) on the periodical me- 

 teors, xi. 261. 



Warwickshire, on the upper formations 

 of the new red system in, xi. 318. 



Water, on the chemical agency of, ii. 



237 ; its decomposition and reproduc- 

 tion by electricity, iv. 291 ; its action 

 on lead, v. 81 ; apparatus for freezing, 

 V. 377 ; decomposition of, vi. 428; as 

 a constituent of salts, vi. 327, 417 ; 

 its absorption by efflorescent salts, xii. 

 130 ; its decomposition by thermo-elec- 

 tricity, xii. 541; on the maximum den- 

 sity of, xii. 1. 



Waterhouse (G. R.) on a new genus of 

 mammiferous animals, ix. 520 ; on cer- 

 tain differences existing between two 

 specimens of Myrmecobius, xi. 200 ; on 

 a new species of Mus, xii. 443 ; on new 

 Rodentia, xii. 445 ; on several unde- 

 scribed quadrupeds, xii. 596. 



Watkins (F.) on the sensation on the 

 tongue from magneto-electricity, ii« 

 152 ; on Mr. Sturgeon's experiments in 

 magneto-electricity, vi. 239 ; on mag- 

 neto-electric induction, vii. 107 ; reply 

 to Mr. Sturgeon, vii. 335 ; on thermo- 

 electricity, xi. 304 ; on the thermo-elec- 

 tric spark, xi.398 ; on electro-magnetic 

 motive machines, xii. 190 ; on the low 

 temperature of Jan. 1838, xii. 302 ; on 

 the decomposition of water by thermo- 

 electricity, xii. 541. 



Watson (H. H.), on the action of lime on 

 solutions of carbonate of potash, iii. 

 314 ; on the absorption of water by 

 efflorescent salts, xii. 130 ; detection 

 of common salt in chloride of potas- 

 sium, xii. 132. 



Watson (J.), an experiment in electricity, 

 X. 326; mode of exhibiting the co- 

 lours of thin plates, xii. 28. 



Wavellite, viii. 173. 



Wave-surface, on an alleged demonstra- 

 tion of Fresnel relative to the, xi. 524 ; 

 in the theory of double refraction, xi. 

 417; xii. 47. 



Waves, mechanism of, xii. 112, 



Wax, experiments on bees' and vegetable, 

 i. 166 ; composition of various vegeta- 

 ble, xi. 156; fossil, V. 316. 



Wazington (R.) on the action of chromic 

 acid upon silver, xi. 489. 



Weaver (T.) on the gold-workings for- 

 merly conducted in the county of 

 Wicklow, vii. 1 ; on the carboniferous 

 series of North America and Pennsyl- 

 vania, ix. 124 ; X. 365 ; on the geological 

 relations of North Devon, xii. 569. 



Webster's " Principles of Hydrostatics," 

 and " Theory of the Equilibrium and 

 Motion of Fluids," viii. 544. 



Welch (H.) on obHque bridges, x. 74. 



Well at Beaumont Green, on a, xi, 215. 



Wellsted (Lieut.) on the manna of Mount 

 Sinai, and the dragon's blood tree and 

 aloe plant of Socotra, x. 226. 



