ofQTertrtcftp* 33 



the feathers did fo readily and ftrong- 

 Iy faften themfelves to thcfe extra- 

 neous and unexcited Bodies, that I 

 have been able (though not eafijy) 

 to make one of them draw the fea- 

 ther from the Amber it felf. 



But it is diligently to be obferv'd, 

 that this unufual attra&ion happen- 

 ed onely whilft the ele&rical opera- 

 tion of the excited Amber continued 

 ftrong enough to fuftain the feathers. 

 For after wards 5 neither the approach 

 of my finger^ nor that of the other 

 bodies^ would make the downy fea- 

 thers change their pofture. Yet as 

 foon as ever the Amber was by a 

 light afFriftion excited again, the fea- 

 ther would be difpofed to apply it 

 felf again to the abovementioned 

 Bodies. 



And left there fhould be any pecu- 

 liarity in that particular feather, I 

 made the Trials with others (provi- 

 ded they were not long enough to 

 exceed the fphere of a&ivity of the 

 Amber) and found the Experiment 

 to anfwer my expe&ation. 



C 2 I 



