8 0f $e #ec?mm'cal ®?igme 



EXPER. III. 



HAving a mind likewifeto fhew 

 fome Ingenious men, how much 

 the production of Heat and Cold de- 

 pends upon Texture and other Me- 

 chanical Affe6i:ions 3 1 thought fit to 

 make again a Sal Armoniac by a 

 way I formerly publifh'd , that I 

 might be fure to know what Ingredi- 

 ents I employ *d, and (hew their ef- 

 fects as well before conjun&ion as af- 

 ter it. I took then Spirit of Salt* and 

 Spirit of fermented or rather putrifi- 

 ed Urine 5 and having put a feal'd 

 Weather-glafs into an open VefTel, 

 where one of them waspourd in^ I 

 put the other by degrees to it y and 

 obferv'd, that>as upon their mingling 

 they made a great noife with many 

 bubbles^ fo in this conflict they loft 

 their former coldnefs 5 and impell'd 

 up the Spirit of Wine in the fcal'd 

 Thermofcope: Then flowly evapora- 

 ting the fuperfluous nioifture, I ob- 

 tained 



