212 CATALOGUE OF BODIES. 



Amber, when immediately after rubbing, it is applied to 

 a shiver, or a compass needle, draws best of all. 



The electric virtue is as vigorous, for a time, in its reten 

 tion, as it was in its first attraction. 



Flame (amber being put within the sphere of its activity) 

 is not drawn by it. 



A drop of water, amber being applied towards it, is 

 drawn into a cone. 



If electric bodies be rubbed too hard, their attraction is 

 thereby hindered. 



Those bodies, which in a clear sky do scarce draw, in a 

 thick air move not at all. 



Water put upon amber choaketh its attractive force, 

 though it draweth the water itself. 



Fat* so encompassing amber, that it toucheth it, takes 

 away its attraction ; but being so put betwixt it and the 

 object to be drawn, as not to touch it, it doth not take it 

 away. 



Oil put upon amber, hinders not its motion : neither 

 doth amber, rubbed with the finger moistened with oil, 

 lose its attractive virtue. 



Amber, jeats, and the like, do more strongly excite, and 

 longer retain the objects they draw, although the rubbing- 

 be but little. But diamonds, chrystal, glass, ought to be 

 rubbed longer, that they may appear hot, ere they be used 

 for attraction. 



Flames nigh to amber, though the distance be very small, 

 are not drawn by it, 



Amber, &c. draw the smoke of a lamp newly extin 

 guished. 



Amber draws smoke more strongly when it comes forth, 

 and is more gross ; and more weakly, when it ascends and 

 becomes thinner. 



A body drawn by electric bodies, is not manifestly al 

 tered, but only leans itself upon them, 



For by Saroa, T suppose, he meanetli Sarcia. 



