A 



DIGRESSION 



ABOUT 



Potential Coldness. 



Potential Coldnefs has been ge- 

 nerally loqkt upon, and that 

 partly perhaps upon the fcore 

 of its very name, as fo abftrufe a 

 Quality , that 'tis not onely rational 

 but necelTary to derive it from the 

 fubfiantid Forms of bodies. But I 

 confefs I fee no neceffity of belie- 

 ving it not to be referrable to Me- 

 chanical Principles. For as to the 

 chief Inftances of Potential Cold- 

 nefs, which are taken from the ef- 

 fects of fome Medicines and aliments 

 in the bodies of men, it may be faid 

 without improbability > that the pro- 

 duced Refrigeration proceeds chief- 

 ly from this, that the potentially 



cold 



