C 107 ) 
Life and Mot ion 5 and that the Fermentation both of the Blood 
and the Vegetable Juice depends on the fame. 
Then hef affeson to deliver his opinion about the Flammd 
i//><i///,efteeming,that the Fermentation of the Blood and confe- 
quently the Incalefcence of it arifeth from its Nicro-aerial 
parts boyling up with the Salino-fulphureous ones , without a 
neceflity of having any recourfe to fuch a Flame ; which he 
doth fomewhatfarcaftically exagitate, thereby provoking the 
Maintainers thereof to a vindication, if the matter will, bear 
it. 
This done,he inquires, Whether Air may be generated de 
V0^ andjon this occafion, recites an Experiment, which he faith 
is like to one, formerly made by Mr. Ecyle^ tending to prove the 
Affirmative of the Queflion. Concerning which, this Author is 
of opinion, that though the-^«r^,produced by thatExperimenr, 
and by others here recited, beendow'd with a no lefsfpring 
than the Air we breath in ; yet'tisno/r«^ Air,fuch as contains 
vital and igneous parts ; for as much as that 4/^//«, wherein he 
found an Animal and a lightedCandle to exfpire,was5^j %e faith ^ 
endow'd with a fpringas well as an unviolared Air,but deftitute 
of Nitro-aerial and Vital parts. Mean time^ he fuggefts an Ex- 
periment to difcover, whether the pretended new generated 
Air be true Air indeed and fit to maintain any Life ; and by 
that Experiment determins this matter in the Negative y though 
he denies not that there is a great affinity betwixt them. 
After this, hefpcndsa Chapter in difcuffing, HowivV^is 
kindled and propagated, and in what manner all Fermentations 
are made,namely by the pulfation of the Cartefian materia [ub- 
////>,whereby as by a fubftance that confiantly moves, he faith^ 
the Ignited parts are put into a vehement motion. And here he 
declares, that Fire Terns to him to be nothing elfe than a very 
great Fermentation of Nitro-aerial and Sulphureous parts ; an^ 
concludes, that, as the moft vehement motion of the igneous par- 
ticles proceeds from thence, that the fulphureous ones pafs in- 
to the particles of the Niter or Air,and there hitting upon the 
briskly agitated materia [ubtilis , are by the impulfe of the 
fame, together with the Nitro-aerial parts,found in the faid fub- 
ftancesjby an Etaftique impetus ftruck omvfo all the more remifs 
P 2 Fer- 
