there is in the Magnet an Acid and 

 an Alcali, and that thefetwoare of 

 contraryNatures,will help to explain, 

 how a Load-ftone does^as they fpeak, 

 attraft the fame end of a poiftd 

 needle with one of its Poles, which 

 'twill drive away with the other, and 

 determine that needle when freely 

 placed 5 to point North and Southend 

 enable it to communicate by its bare 

 touch the fame Properties 5 and abun- 

 dance of other ftrange ones, to ano- 

 ther piece of Steel. But I forbear to 

 alledge particular Examples refer- 

 rable to the feveral Qualities above- 

 mentioned,, whether manifeft or hid- 

 den, becaufe that in great part is al- 

 ready done in our Notes about parti- 

 cular Qualities.^ which 'twill appear 

 how little able the employing of AU 

 call and Acidum will be to afford us an 

 account of many things. And though 

 I enlarge not here on this objecti- 

 on, yet I take it to be of that impor- 

 tance, that D though there were no o- 

 ther,this were enough to (hew that 



B 4 the 



