February 1817. 



No. "226; 



Published the Last Day of every Months 

 [PRICE 2s. 6d.] 



SCT..,'.M:,.' '."J-!.'.' ,..■". !■■■ gq 



THE 



PHILOSOPHICAL MAGAZINE 

 , AND JOURNAL: 



COMPRBUBNDIKO 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



GEOLOGY, 



AGRICULTURE, 



MANUFACTURES AND COMMERCE. 



NUMB^^R CCXXVI. 

 For FEBRUARY ISII, 



CONTAINING THE FOLLOWING ENGRAVING BY PORTER: 



A Quarto Plate to illustrate Mrs. IbbeTson's Physiology of 

 . Vegetables. 



^Y ALEXANDER TILLOCU, 



»!,Tl.I.AiF,S.A. EUI\-. AXD PERTH, ETC. 





^\5^ 



LONDON: 



PniKTED BY RICHARD AMD ARTHUR TAYLOR, SHOE I.ANE: « 



And«old by Cadell and Davies; Longman, Hurst, RKes,j 

 Oemk, ic BuowNj MuRRAYj HiOHLEYj Shekwood and Co.j[| 

 Hakdino; Ukderwood; London: Consiable and Co. 

 Edinburgh: Brasu and Reio ; Duncan; and Penman, 

 Glasgow : and Gilbert and Hodges, Dublin. 



'-sjr^y'i^-^- 



