( 445 5 
After this, the Experimenter being defirons to fee,wheiher thefe 
Ebullitions did make new Air; he put in the Recipient a Gage ffhac 
uzgUfs tube fiird either withWater freed of air,or with Mtrcury, 
fcrv^ing to meafureche quantity of the Air ir^the Recipient)which 
was four Inches long^ and obferv*d, chat at the inftanc when the Li- 
quors were mingled together, the water in the Gage rofe very nim- 
bly to the top of the gage \ and then drawing ooc this new Air thac 
Was made, he made the gage- water fubfide again by degrees, in like 
manner as when the common Air is drawn out i And by this means^ 
It was feen, that all thefe kinds of ebulitionmake * o ^ occafi^ 
an Air which expands it felf like common Air l^^lZlc^^^Sx 
'ds recorded ia the 
Journal-Book of xht R,Sochty,kA66%.' April^o^^ xht honourable Mr, gave an 
account to the faid Sschty of the Experiments^ he had then made about generating 
new Air, or extricating that Air which was lurking before in feveral bodies : Ac 
which time he mentioned alfo forne ways of examining, whether the fubftance thus 
produced be trm Air or rot* 
And long before that time, i^/X* -^1664 t^e 15^^. of March^ ( wit-nefs the fame 
journal) Mr^^oy/c mentioned to the K.i'oc/rr^jthat Corals or Oyfter fhels pounded, 
aRd put into diftilled Vinegar,might prove fit Subftances to produce Air wholefom 
for Infpiration. At which time he alfo propo/d> that fomefit might be put 
into a Receiver of hisExhauftingEngi^ jafid-ihs Air pumped out till the creature 
grewfiekifh, and that then fomenew Air might beptodaced in the Receiver by a 
contrivance of making diftilTd Viregei wor k upon the fubftances before-men* 
tion*d ; to fee, whether by this means the Animal would recover* 
About which t/me Sir CAn^rew alfo fuggefted, to put a fermenting liquor in a 
gUfs-ball,and to fit aftop-cock to it , ai.d ry a bladderabout i;hetop of theAop- 
cockjbj which means the Air,to be generated by the fermenting liquor, would pafs 
into the bladder,and upon the turning of the ftop-cock be kept there in the form of 
Air^ Mr.^^^^ alfo mention'd feveral liquors , which by their working upon one 
another would produce an Air , as Ojiof Tartar and Vitriol ; Spirit ofiVine and Tur- 
pentine* And the fame made before the il^iscthe following Expeeiment : He took 
a common glafs- viol with two Pipes, and fome pounded Oifter-fhels and ^^ua for-- 
tl6\ and as foon as the latter was by one of thofe pipes powred upon the former, and 
the holeflop't with good cement , the Ebullition, caufed by thefhels being corro- 
ded by the A(}Ha forth j did in a very little time blow up the bladder, tyed on to 
the other pipe? fo as to fwell it very plump with Air 5 which expanfion remained 
till the i"oc^€JEy rofe, after they had order 'd the faid veflel to be carefully lock'c up 
till their i|ext meeting , which being the week after, thebladder was then fonrd 
fomewhatpirunk. The like Experiment was mzd^ Wiih bQttUd A'c , fuppoledro 
yield a moire wholfome Air for refpiration, 8cc. 
Yet here is fomething that fcems to be very remarkable : which 
i?, that the Air which is made by thefe ebinUition?, is not of the 
fame nature. For, it hath been found experimentally, chat die Air 
formed by the mixture of ^qu^i fortis and Cf^/^/^^r remains alwaies 
Air, and alwaies keeps up the water 10 the Glafs at that height to 
which it raifed it ; but on the contrary, that Air which hath bttii 
produced by the mixture of Oylof Tartar s.nd Of! of Vitriol, isal- 
M m m 2 ' pao ft 
