Vol. 66. 



November 1825. 



No. 331. 



Ptcblished the Last Day of every Month.— Price 2s. 6d. 



THE 



PHILOSOPHICAL MAGAZINE 



AND JOURNAL: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND COMMERCE. 



NUMBER CCCXXXI. 

 * /br NOVEMBER 1825. 



WITH A PLATE 

 To illustrate M. Ampere's Ne;v Electro-dynamic Experiments. 



By RICH4RD TAYLOR, F.L.S. 



MEMBER or THE ASTRONOJUOtl SOCIETT OP LONDON; OP THE METEOROIO 

 GICAL society; AND OF THE UOVAL ASIATIC SOCIKTY *"="°"°''°- 

 OP GREAT BRITAIN AND IRELAND. 



?.. 



^ 



^ 



LONDON: 



PRINTED BY RICHARD TAYLOR, gHOK-LA\£: 



»So!d byCadell; Long^,^^, Hurst, Recs, Ormc, Brown and Green; Baldwin, 

 j *-^^';«'^^'. °"'' % ; Highley ; Sherwood, Gilbert, and Piper ; Harding: Under- 

 i wood; Siinpkm and Marshall ; London :-and by Constable and Co. Edin- 

 burgh ; and Penman, Glasgow. 



