18 Eeflertiotij5upont^tootMt0 



On the other fide I have fometimes^ 

 though not fo conftantly, founds that 

 fonie Acid Spirits^ efpecially that of 

 Verdigreafe made per/e 3 would 3 when 

 poured upon Salt of Tartar, make a 

 Cotiflift with it 5 and produce a copi- 

 ous frothy though we obferved it not 

 to be accompanied with any manifeft 

 Heat. And I elfewhere mention two 

 bodies^upon whofe putting together 

 numerous bubbles would,, for a long 

 time^and not without noife, be gene- 

 rated 5 and fucceed one another, 

 though I could perceive no Heat at 

 all to accompany this Tumult. 



As(ortheTaft> which by many is 

 made a great Touchftone, whereby 

 to know Acids and Alcalies,! confider 

 that there is a multitude of mixt bo- 

 die^ wherein we can fo little difcern 

 by the Taft, which of the Principles 

 is Predominant, that this Senfe would 

 not oblige one to fufped,much lefs to 

 conclude^there were one grain of ei- 

 ther of them to be found there 5 fuch 

 bodies are Diamonds and Rubies 3 and 



moft 



