[ 57 ] 



overplus fap, in the outward expanlion of 

 the body of the tree ; by enlarging the out- 

 ermoft ring of foUd wood, and likewife giv- 

 ing a freer evaporation of fome ill confe- 

 quences that might inftantly enfue from It's 

 moft volatile parts : So that all is quiet with- 

 in — too great rarefadion ftaied — ftrong ebul- 

 litions cooled — their common effedts pre- 

 vented — And nature is doing the Marker's 

 bufinefs, at the fame time it is doing it's 

 own. 



I HOPE my regard to fome perfons at firll 

 alluded to, will be accepted by others, as a 

 fufficient apology, both here and elfewhere, 

 for the protrafted manner of delivering my 

 obfervations ; as likewife for the diverfify- 

 ing in the form, now and then, fome expref- 

 lions ; from the confcioufnefs of my own 

 infufficiency to convey my ideas intelligibly 

 to any at once. 



It was Indeed partly from a like, tho' 

 different operation widely, which a philofo- 

 pher would call tranflatitious terms, that I 

 fell upon bark-lancing. The fame being 

 occafioned by my reflection on the prad:ice 

 ^f m^ny fhyjiciqns and Jurgeons caufing ^ 



revulfion. 



