552 



INDEX. 



Ural mountains, on the geological struc- 

 ture of the, 124. 



Vapours, on the detithonizing power of 

 certain, 176. 



Veall (Mr.) on a halo round the sun, 

 316. 



Verneuil (M. de) on the geological struc- 

 ture of the Ural mountains, 124. 



Vignoles (Prof.) on Clegg's differential 

 dry gas light meter, 388. 



Vogel (M.) on the action of sulphurous 

 acid on metallic oxide, 397. 



Voltaic battery, observations on a new, 

 376. 



Voltaic circuit, on the cause of the reduc- 

 tion of metals by the, 51 ; on some new 

 instruments and processes for deter- 

 mining the constants of a, 381. 



Voltaic reaction, experiments on, 443. 



Walker (S. C.) on the comet of 1843, 

 148. 



Walter (M.) on the products of decompo- 

 sition of amber, 477. 



Wartmann (Prof.) on the relations which 

 connect light with electricity, 253 ; on 



some experiments to show that electri- 

 city does not contain heat, 257. 



Wartmann (Prof.) on the cooling of elec- 

 trified bodies, 260. 



Wheatstone (Prof.) on some new voltaic 

 instruments, 381. 



Willis (R.) on the special function of the 

 skin, 50 ; on the import and office of the 

 lymphatic vessels, 52. 



Wilson (E.) on the Entozoon folliculorum, 

 368. 



Winn (Dr.) on the production of heat by 

 the contraction of elastic tissue, 326. 



Wolfram, on the composition of, 477. 



Wonfor (J.) on the spontaneous decom- 

 position of the chlorate of ammonia, 75. 



Xanthorhamnine, composition of, 5. 



Young (Prof. J. B.) on the demonstra- 

 tion of the rule of Fourier, 6 ; on new 

 criteria for the imaginary roots of nu- 

 merical equations, 450. 



Yttria, observations on, 251. 



Zoology, propositions for rendering the 

 nomenclature of, uniform and perma- 

 nent, 108. 



END OF THE TWENTY-THIRD VOLUME. 



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