Dotttint of &uaftf t e& 17 



C.H A P. I V. 



I Further obferve 5 that the Chymiftsf 

 Explications do not reach deep 

 and far enough. For firfl, moft of 

 them are not fufficiently diftindt and 

 full, fo as to come home to the parti- 

 cular Phenomena,- nor often times fo 

 much as to all the grand ones, that 

 belong to the Hiftory of the Quali- 

 ties*they pretend to explicate. You 

 will readily believe, thaf a Chymift 

 will not eafily make out by hisSalt^ 

 Sulphur, and Mercury, why a Load- 

 ftone capp'd with fteel may be made 

 to take up a great deal more Iron, 

 fometimes more than eight or ten 

 times as much., than if it be immediate 

 ly applied ta the iron 5 or why if one 

 end of the Magnetic Needle is di- 

 fpos'd to be attracted by the North* 

 p0le 3 for inftance, of the Load-ftone 3 

 the other Pole of the Load-ftone 

 will not attract it but drive it away i 

 or, why a tjar or rod of iron, being 

 jieated red-hot and cooled perpendi- 

 B cularly* 



