tr(i ON TH» BARK OF 



-. , , , riatic Gas instead of its becoming weaker, accordifig to iheh 

 Facts and oo- t> ... 



servatjons on theory, the hydrogen should have united to the oxmuriatic 

 explanatioa of^^. and formed water, but it became a stronger, more 

 the theory or o 



Catvaiibm, pungent and vchitile gas, destroying vcgetuble colours more 



actively, just the reverse of what this French theory teaches* 

 . It appears clearly that the muriatic acid becomes a gas from 

 inflammable matter, also that its volatility, pungency, and itg 

 power of destroying vegetable colours, proceed from thi« 

 . combustible matter, and that this combustible matter of this 

 oxmuriatic gas, when united with oxigen gas, produces an ac- 

 . live fermentation, setting loose a great quantity of free fire, 

 the same as nitrous gas and oxigen gas do, the one mixture 

 forming the nitrous acid, and the other the muriatic acid. 

 This accords with the doctrine of our forefathers, that com- 

 bustible matter makes bodies become volatile, and it appeal » 

 extraordinary, how far we have departed from this clear, simple* 

 and obvious doctrine. But I am afraid I have made the com_ 

 munication long enough, therefore you shall have the remain- 

 der in the next, with your permission. 

 1 am, Sir, 



Yours, icC. 



II. B. K. 

 London, April \7, 180^. 



VI. 



A Chemical Examination of the Bark of the White Willow and 

 of the Root of the Herb Bennet, compared with Quinquina ; 

 considered in a medical Point of Vicxv. B^ M. Bouillon 

 Laorange,* read before the Soviet}/ of Medicine at Paris. 



Inquiry from JLN the memoir which I read, last Florcal, before the class 



the chemical ^jf p^jy^ical and Mathematical Sciences of the National Insti- 



properties of •' 



bitter vegota- tute, on tannin and gallic acid, I mentioned, that in pursu- 



the V niT'-be'^Gf'^S ^^ researches among several vegetables, called bitter, 

 jiiedical value, wherein the tannin was supposed to reside, I had observed 

 properties in some, which led me to examine them in a me- 

 dical point of view. Prior to the communication of my ex- ' 

 perimeuts and of the reflections I had made upon them, I 

 wished to ascertain how far the art of healing might derive 



* Annalcg de Chimic, vol, livt p. 287. 



advantage 



