[ is ] 



gether, (caufed by the flitting of the bark) 

 amounted to — efpecially if the operation was 

 made in hot weather. For I have found on 

 the proof before mentioned in fome further 

 hke experiments, that the real circular 

 growth amounted to fometimes more, fome- 

 times lefs, than the whole of fuch chafms : 

 And that tho' the bark-Jlitting was or was 

 not made in hot weather, and fuch a differ- 

 ence otherwife, might probably be occafi- 

 oned, by an unequal adftridion, or fupple- 

 nefs of the bark of fuch Oaks ^ it being 

 reafonable to fuppofe that in the latter cafe^ 

 It will not always rend open, like a cord or 

 piece of cloth that is ftrained, fo readily as 

 in the former — The circumferential girt 

 being nine times in ten extraordinary on 

 fuch an occafion, is a fufficient proof of a 

 revulfion of that fap thereto, which for 

 want of being fo ufefuUy diverted would 

 probably have occafioned lateral germenSo 

 To this I am likewife on experience able to 

 add, that altho* bar k-Jlit ting, tho' never fo 

 abundantly adminiftred, rarely happens to 

 dellroy germens already grown, without 

 other means; yet it feldom fails to make 

 them weak and fickly — The flitting by me 

 commonly pradifed on bough-debarking in 

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