(\90 
■fcftc furfaee of fuch fragments erf shining Wood, as I ms wont to 
employ : And chough fome parts of this large Superficies {lined 
vividly (for the light was ufually enough, for rotten Wood, infe- 
riohr to that. of our Fifh) yet this great piece, being pat into a 
convenient Receiver , was, upon the withdrawing of the A : r de- 
prived of Lighr, as the fmalier ones had been formerly * the re* 
turning Air reft oring its Light to the one, as it had done to the 
other. 
Experiment XII. 
B Ut this is not the chief thing I intended to acquaint you 
with, That being the fuccefs of fome Trials, which we 
made in profecution of thefe two neighbouring Experiments. 
In the fir ft of thefe I told you, I had been able to try but for 
half an hour or a little more, that a Shining piece of fVood, depri- 
ved in our Engine of Light, would yet retain a difpofition to be 
as it were re-kindled upon the frefh accefs of the Air, Where- 
fore, though T could havewilhed to have made a further Triil 
with thef ime kind of Bodies, yet being able to procure none, I 
fobfti’uted in their room fraall pieces of Rotten Ft[h y that (hone 
Feme of them more faintly, and fome of them more vividly, in 
referer.ee to one another 5 but none as ftrongly, as fome, that. I 
could have employed : and having in a very fmall and clear Rccei- 
ver fo far drawn off the Air, as to make the included Body dif- 
appear, we fo ordered the matter, that we kept out the Air for 
about 24 hours $ and then allowing the Air to re-enter in a dark 
place and late at. night, upon its firft admittance t heFift) regained 
its Light. m 
Experiment XlfL 
T His, compared with fome of my former Obfec various about 
PutrefnBion , put me upon a Trial, which chough icmif- 
carried, I {hall here make mention of, that in cafe you, who are 
better furnilht with Glaftes, think it worth while, you may get 
reiterated by the Society’s Operator, Considering then.how great 
an intereft Putrefaction hzth ln the shining o£ Fifties , and Air in 
the PhsmmenA of Putrefaffion,l thought, it might be fomewhac 
tothepurpofe, to take a Fiihjthac was, according to the com- 
mon 
