A 



JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



MARCH, 1812. 



ARTICLE I. 



On the different Sorts of Wood, ivith some Remarks on the 

 Work of Du Thouars. In a Letter from Mrs. Agnes 

 Ibbetson. 



To Mr. NICHOLSON. 

 SIR, 



JL Know not whether the account I have given of the me- On the treatise 

 chanism of Botany has convinced my readers, or done j ^^^^'^^ 

 justice to my subject; the latter is indeed impossible. 1 

 shall however (though thoroughly sensible of my defi- 

 ciencies) renew ti^e discuission as soon as the cpring bestows 

 a fresh return of her treasures for dissection. In the mean 

 time I shall give a farther idea respecting the formation of 

 ivood, in some measure answering to the new Trfeatise on 

 Vegetation, received from France, and written by Aubert 

 du Thouars, celebrated for his studies in physiology, and 

 who appears (like myself) to have taken nature for his 

 guide, and left books for a future consideration ; thinking 

 it of greater consequence to ascertain a few absolute facts. 

 Vol. XXXL No. 143.~M ARCH 1812. M than 



