n 









220 Analyfis of the Air. 



Experiment XCVI. 



Slprd 1 6th, A cubick inch of the afore- ^ 

 mentioned Walton Tyrites powder'd, with^L* 

 a cubick inch of compound Aquafortis , ex- 1 ^* 



panded with great violence heat and fume 

 into a fpacc equal to 200 cubick inches, and ' 



in a little time it condenfed into its former 

 fpacc, and then abforbed 85 cubick inches' 

 of air. 



But the like quantity of the fame Mineral, ll 

 with equal quantities of compound Aquafor- 

 tis and JVater, fermented more violently, 

 and generated above 80 cubick inches of air. 

 I repeated thefc Experiments feveral times, a ...* 

 both with and without water, and found 2B 



constantly the fame effect. u.il 



J 



Vet oil of Vitriol and Water, with forac 



of the fame Mineral, abforbed air. It was 

 \cry warm, but did not make a great ebul- ' T™ 



lition. *" 



•Am 



Experiment XC VII. 



I cliofe two equal fized boltheads, and 

 put into each of them a cubick inch of 



pow- ** , 



