Dost tine of gftuaftf fc& 3 3 



from the feline parts of the Aqu&for'* 

 tk , which 5 being imbodied in the 

 metals and of a very fufible nature^ 

 impart that eafinefs of fufion to the 

 metals they are mixt with. Accor- 

 ding to which plaufible explication 5 

 one might well expeft, that, if the 

 faline Corpufcles were exquifitly 

 mingled with Tin, they would make 

 it far more fufible than of it felf it is* 

 And yet, as I have elfewhere noted, 

 when I put Tin into a convenient 

 quantity of Aqua fortify the metal be* 

 ing corroded, fiibfidedj asisufual,ia 

 the form of whites of eggs^which be- 

 ing well driede* the Tlnn was fo far 

 from being grown more fufible by the 

 addition of the faline particles of the 

 Menjiruum^ that, whereas 'tis known 

 that limple Tin wiilmelt long before 

 it come to be red-hot, this prepared 

 Tin would endure for a good while 

 not only a thorow ignition, but the 

 blaft of a pair of double bellows $ 

 (which we ufually imploy'd to mek 

 Silver and Copper it felf,) without 

 being at ail brought to fufion, An4 



C as 



