502 



INDEX. 



Volcanic eruption of Co9iguina, on the, 

 363. 



— eruption of Mount Etna in 1536, 

 316. 



eruption of Vesuvius in 1834, 326. 



Volcano, new, in the Mediterranean, 

 94, 107, 184, 196, 284. 



Volta's theory, refutation of, 99. 



Volta-electrometer for measuring elec- 

 tric currents, 262. 



Voltaic battery,improved form of, 343 ; 

 practical construction and use of, 

 343 ; laws of action of, 100 ; ex- 

 amination of, 290 ; new principle 

 in the construction of, 410 ; relative 

 merits of electrical machines and 

 voltaic batteries, 412. 



Voltaic combinations, on, 371, 385,469. 



■ electricity, researches in, 99. 



Walker (J.) on the resistance of fluids, 

 199. 



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

 459. 



, meteorological journal kept at 



Allenheads, 381, 460. 

 Ward (F. O.) on the muscles of the 



arm, 405. 

 Wardrop (J.) on the influence of the 



respiratory organs in regulating the 



blood in the heart, 342. 

 Warming apartments, on the modes of, 



411. 



Warren (Dr.). notice of, 439. 



Water barometer, Royal Society's, 134. 



Water cement, artificial, 41. 



Water, filtered, plan for supplying, 36. 



of the well Zem-Zem, analysis of, 



333. 



Watkins (F.) on the magnetic power 



of soft iron, 187. 

 Waves, propagation of, 414. 

 Weights and measures, standard of, 



353. 



Weston (Rev. S.), notice of, 10. 



Westwood (J. O.) on the supposed me- 

 tamorphoses in the Crustacea, 341. 



Whatton (W. R.) on tic douloureux, 

 164. 



Wheatstone (C.) on acoustic figures, 

 180. 



on measuring the velocity of elec- 



tricity, and the duration of electric 



light, 299. 

 Whewell (Rev. W.), report on Prof. 



Airy's paper on an inequality of 



long period in the motions of the 



Earth and Venus, 108. 

 , report on Mr. Lubbock's paper 



on physical astronomy, 121. 

 , essay towards a first approxima- 

 tion to a map of cotidal lines, 188. 

 ■ on the empirical laws of the 



tides in the port of London, 256. 

 on the empirical laws of the tides 



in the port of Liverpool, 345. 

 on the results of tide observations 



made in Great Britain and Ireland, 



329. 



on the solar and diurnal inequal- 

 ities of the tides at Liverpool, 377. 



results of tide observations made 



in Europe and America, 399. 



on the diurnal inequality of the 



height of the tides at Plymouth and 

 at Sincapore, and on the mean level 

 of the sea, 465. 



on the diurnal in equality- wave of 



Europe, 485. 



Whidbey (J.), notice of, 229. 



Wilkins (Sir C), notice of the late, 435. 



Wilks (Col.), notice of the late, 148. 



William IV., address of the president 

 and council on obtaining the Royal 

 signature as patron, 34, 81. 



Williams (Rev. D.) on the caves of 

 the Mendip Hills, 55. 



Williams (Dr.) on a new law of com- 

 bustion, 280. 



Wind, on the velocity of the, 484. 



, helm, on the, 459. 



Wollaston (Dr.), the Royal medal 

 awarded to, 220. 



Wright (L. W.) on supplying filtered 

 water to the metropolis, 36. 



Zach (Baron de), notice of, 152. 



Zem-Zem, on the water of the well, 333. 



Zenith telescope of the Royal Obser- 

 vatory, on the best method of using 

 it, 270, 326. 



Zoophytes, polypiferous, 268. 



, on some of the higher forms of 



Polypi, 479. 



END OF THE THIRD VOLUME. 



PRINTED BY RICHARD AND JOHN E. TAYLOR, RED LION COURT, FLEET STREET, 



