44 



GENERAL INDEX. 



Vitreous electricity distinguished from resinous . . ELECT. . 



VOLTA'S galvanic pile, construction of ... GAT.V. 



theory of galvanism, arguments for and against . 



Voltaic battery of the Royal Institution . . 



Foliate battery, intense heat produced from . ... . GALV. . 



experiments with .... . 



pile, decomposition and recomposition of water by . 



different decompositions by ... . , 



and common electricity, different mechanical effects of - 

 electricity, sensation of in passing through the 



human body ........ 



transferable to the common electrical 



Voltaic magnets, description of t . . . . . ELECT. MAGN. 



made to exhibit the phenomena of the dip- 

 ping needle . ' . . . . . . . 



WATER, accumulation of in hills and mountains . . POP. INT. 



its boiling point affected by atmospheric pressure THERM. 

 height of its boiling point in different states of 



the barometer . . . . . . . - 



decomposed and recomposed by the voltaic pile GALV. 

 . . why not decomposable by the common electrical 



machine ........ .. . . . . 



Water-level, description, of that instrument . . . POP. INT. 



Wedge, a mechanical power ...... . 



WEDGEWOOD'S pyrometer, description of . . THERM. 



table of temperatures accord- 

 ing to ......... 



Weighing-beam, principle and construction of . . POP. INT. 

 Weight multiplied by the velocity, the measure of mo- 

 mentum ........ . 



of bodies different at different parts of the earth's 



surface ........ 



Wheel and axle, account of that mechanical power : . . 



White produced by the reunion of all the spectral colours NEW. OPT. 



. . light, decomposition of ..... 



Winds, general and particular remarks on ... POP. INT. 



causes of, investigated ..... . 



WiNKLER first used cushions in electrical machines . ELECT. 



Winter, the sun nearer the earth in than in summer . POP. INT. 



WOLLASTON'S barometrical thermometer described . TIIEI- i 



elementary galvanic battery . . . GALV 



periscopic spectacles described . , OPT. 1> 



camera lucida, constructional' . . . 



* 



ZAMBONI, description of his dry galvanic pile ; . . GALV 

 Zig-zag progress of the electric spark when passing to along - 



distance. ...... . . KLT.C 



Zmeand copper, different effects of certain acids upon GAL\ 



Zodiac, signs of described . ..... Voi'. 



