if a Puncheon, as Smiths call it, or a Rod 

 of Iron, be, by being ignited and fuffered 

 to cool North and South, and hammered 

 at the ends, very manifeiily endowed with 

 Magnetical vertue, this vertue will in a 

 trice be deilroyed> by two or three fmart 

 blows of a ftrong hammer upon the middle 

 of the oblong piece of Iron. 



But Magnetifrn \s Co fertile a Subje6t 5 that 

 if I had now the leifure and conveniency 

 to range among Magnetical Writers, I 

 fhould fcarce doubt of finding, among 

 their many Experiments and Obfervati- 

 ons, divers that might be added to thofe 

 above delivered, as being eafily applicable 

 to my prefent Argument. And I hope 

 you will find farther probability added to 

 what has been faid, to (hew, that Magne- 

 tical operations may much depend upon Me-* 

 chanical Principles, by fome Phenomena re- 

 cited in another Paper, to which I once 

 committed fome promifcuous Experiments 

 and Obfervations Magnetical. 



FINIS. 



