i186 JY 
me 
Guan -olafs tube, and one meafure of ni- 
the wwdef-trOuS air joined to it, the mark ftood 
woyed after fhaking and répofing at 1.923 
a fecond meafure being added, it 
ftood-at 1.795 afterathird meafure 
a.1.68; after a fourth meafure at 
~ Bs B75 ¢ aber a fifth = meafure at 
415 28S : 
“3 By trying i it in: the ies way 
- “familiar to Dr. -Priefley, the refult 
was as follows: one meafure of ‘it, 
with two meafures of nitrous ‘ait, 
occupied 0.58. ae 
By puthing this manner of trial 
farther, as I do, the refult was this® 
by adding to the two former mea- 
fwres of - nitrous ‘air -a third one; 
the mark was 1.835; by adding @ 
39 fourth, it marked 2:81. Thus it 
_ ‘app€ars> that. by this lait method — 
the: quantity of both airs deftroyed — 
We rn 
~ a E 
