THE 



PHILOSOPHICAL MAGAZINE 

 AND JOURNAL: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND COMMERCE. 



By ALEXANDER TILLOCH, LL.D. 



M.R.I. A. F.S.A. EDIN. AND PERTH ; CORRESPONDING MEMBER OF THE ROYAL 



ACADEMY OF SCIENCES, MUNICH; AND OF THE ACADEMY OF 



SCIENCES, LITERATURE AND ARTS, LEGHORN, ETC. 



And RICHARD TAYLOR, F.L.S. 



MEMBER OF THE ASTRONOMICAL SOCIETY OF LONDON, OF THE METEORO- 

 LOGICAL society; AND OF THE ROYAL ASIATIC SOCIETY 

 OF GREAT BRITAIN AND IRELAND. 



" Nec aranearum sane textus ideo melior quia ex se fila gignunt, nee noster 

 vilior quia ex alienis libamus ut apes." Just. Lips. Monk. Polit. lib. i. cap. I. 



VOL. LXV. 



FOR 



JAMUARY, FEBRUARY, MARCH, APRIL, MAY and JUNE, 

 1825. 



LONDON. 



PRINTED BY RICHARD TAYLOR, SHOE-LANE; 



AND SOLD BY CADELL ; LONGMAN, HURST, REES, ORME, BROWN, AND GREEN J 



BALDWIN, CRADOCK, AND JOY; HIGHLEY ; SHERWOOD, JONES, 



AND CO.; HARDING; UNDERWOOD; SIMPKIN AND 



MARSHALL, LONDON : — AND BY CONSTABLE 



AND CO. EDINBURGH: AND PENMAN, 



GLASGOW. 





