34 Mt\)t ^et^anical Caufe* 



blew colour of a good folution of 

 that metal. And the Copper we 

 can eafily again without falts obtain 

 by Precipitation out of that liquor 

 with iron, and that too, remaining 

 diflblved in its place, we can preci- 

 pitate with the taftlefs powder of 

 another Mineral. 



Befides thtfe twpways of weak- 

 ning the Menftruum, namely, by 

 mortifying its faline particles or re- 

 ducing them to work on other bo- 

 die^ and to forfake thofe they firft 

 diflolved, there are fome other ways 

 of weakoing the Mersftruum. 



A Third way of effecting thisjis by 

 leflening or difturbing the agitati- 

 on of the folvent. And indeed fince 

 we find by experience, that fome 

 liquors when they are heated, will 

 either diflblve fome bodies they 

 would not diflblve at all when they 

 were cold, or diflblve them more 

 powerfully or copioufly when hot 

 than colds 'tis not unreafonable to 

 fuppofe, that what confiderably lef- 



fens 



