of tttatrtcitp* 29 



to flye moft to her Cheeks when 

 they had been put into a fomewhat 

 ftift* Curie 5 and when the Weather 

 wasfrofty *. 



* Some years after the making the Expe- 

 riments about the Produ&ion of Elettrich 

 *j, having a defile to try. whether in the 

 Attra&ions made by Amber, the motions 

 excited by the air had a considerable Inte- 

 reft, or whether the EfFe& were not due 

 rather to the Emiffion and Retradlion of 

 Effluvia* which being of a vifcous nature 

 may confiti of Particles cither branched or 

 hookt, or otherwife fit for fomc kind of 

 Cohefion, and capable of being ftretch'd, 

 and of fhrinking again,as Leather Thongs 

 are : To examine this, I fay, I thcught 

 the fitteft way, if 'twere pra&icable, 

 would be, to try, whether Amber would 

 draw a light Body in a Glafs whence the 

 air was pumpt out. And though the Tri- 

 al of this feem'd very difficult to make, 

 and we were fomewhat difcouraged by 

 our firft attempt, wherein the weight 

 of the ambient air broke our Receiver, 

 which chanced to prove too weak, when 

 , the internal air had been with extraor- 

 dinary diligenctpumpt out y yet having a 

 vigorous piece of Amber , which I had 

 caus'd to be purpofely turnM and poliVd 



for 



