[58] 



revulfion, upon an untimely eruption of 

 blood J or puftulous humour in human bo- 

 dies ; in order to put a flop to fuch unnatu- 

 ral extravafations. Altho' I was fenfible 

 this kind of revulfory expedient would not 

 inftantly take effect. Yet I was confcious 

 before any mifchief would enfue, it would 

 prevent the acuminated corpufcles of the 

 Sap (on account of the great horizontal im- 

 petus of the pent air in the body of an Oak, 

 ftrengthened on debarkation^ by the diminu- 

 tion of the wonted channels within) from 

 boring thro* the bark, as fo many fpicula^ 

 in the germens original form of buds. 



Of all the powers of art over nature, 

 neither Mr. Boyle^ nor any other naturalift, 

 that I know of, has mentioned the follow- 

 ing 5 which tho' not a perfedl parallel, I 

 crave leave to recite — The inftance is, of 

 the power of art to tranflate even the aliment 

 of an animal to a different part of it's body, 

 from where nature otherwife would have 

 directed it. An example whereof is taken 

 from the mechanical Jockies, who, when 

 they have a horfe in keeping up for a mar- 

 ket, that is either flat ribb'd, or poorly gaf- 

 coign'd, or has any other part of his body 



impro- 



