MARCH 1831. 



Published the First Day of every Month. Price 2s. 6d. 

 THE 



PHILOSOPHICAL MAGAZINE 



AND 



ANNALS OF PHILOSOPHY: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, THE LIBERAL 



AND FINE ARTS, AGRICULTURE, MANUFACTURES, 



AND COMMERCE. 



NEW SERIES. 



N 51. M A RCH 1831. 



BY 



RICHARD TAYLOR, F.S.A. L.S. G.S. M. Astr. S. &c. 



AND 



RICHARD PHILLIPS, F.R.S.L. &E. F.G.S. &c. 



AbfcttS ft FLAMM^M 



LonDon : 



PRINTED BY AND FOK RICHARD TAYLO&, ItED LION COUHT, VLLLT STREET, 



Printer to the University of Londw. 

 Sold by Longman, Rccs, Orme, Brown, and Green; Baldwin and Cradock ; 

 Cadell; Sherwood, Gilbert, and Piper; Simpkin and Marshall ; Under- 

 wood; and S. Highley, London : and by Adam Black, Edinburgh j Smith 

 and Son, Glasgow : and Hodges and M'Arthur, Dublin. 



