( 54 ©) 
pair of Bellows was Mov’d very quick, whereby the firft pair was alwayes 
kept full and alwayes blowing into the Lungs • by which means the Lungs alio 
were alwayes kept very full, and without' any motion • there being a continu- 
al blaft of Air forc’d into the Lungs by the firft pair of Bellows, fupp]yi n o ft as 
faft, as it could find its way quite through the Coat of the Lungs by thefmall 
holes pricked in it, as was faid before. This being continued for a pretty while 
the Dog, as I exfpe&ed, lay ftiil, as before, his eyes being all the time very 
quick, and his Heart beating very regularly ; But, upon ceafing this blaft and 
fuffermg the Lungs to fall and lye ftiil, theDogg would immediately fall ’into 
Dying convulfive fits •, but be as fooftreviv’d again by the renewing the fulnefs 
of his Lungs with the conftant blaft of frefhAir. 
Towards the latter end of this Experiment a piece of the Lungs was cut quite 
off; where ’twas obfervable, that the Blood did freely circulate, and pals tho- 
row the Lungs, not only when the Lungs were kept thus conftandy extended 
but alfo when they were fuffer’d to fubfide and lye ftiil. Which feem to be* 
Arguments, r hat as the bare Motion of the Lungs without fre/h Air contributes 
nothing to the life of the Animal, he being found to furvive as well, when they 
were not mov’d, as when they were ; fo it was not the fubfiding or movelef- 
nefsof the Lungs, that was the immediate eaufe of Death, or the flopping 
the Circulation of the Blood through the Lungs, but the want of a fufficient 
fafply of frejh Air. 
I (ball fhortly further try, whether the fuffering the Blood ro circulate 
through a veffei, fo as it may be openly expofed to the frdh Air, will not fuf- 
fice for the life of an Animal ; and make lome other Experiments, which, I 
hope, will throughly difcov.er the Genuine ufe of Refpiration ; and afterwards 
confider of what benefit this may be to Mankinde. 
FINIS. 
Inth t SAVOY, 
Printed by T. for fohn Martjn , at the Bell 
a little without Temple AB ar , and Tfatha^ 
mefflrooks at the Angel in Grejhant'C olledge^ 
v . i66j. 
