(54®) 
piir of Bellows was mov'J very quick , whereby the firft pair was alw^yes 
kept full and alwayes blowing into che Lungs • by which means the Lunggalfo 
were alwayes kept very full, and without any motion • there bciilg a continu- 
al blaft of Air forcM into the Lung^ by the firft pair of Bellows, fupplying it as 
faft, as it could find ics way quite through the Coat of the Lungs by the fmall 
holes pricked in it, as was faid befoi'e. This being continued for a pretty while, 
the Dog, as I exfpeded, lay ftill, as before, his eyes being ail the time very 
quick, and his Heart beating very regi^arly ; But, upon ceafing this blaft, and 
fuffering the Lungs to fall and lye ftill^ the Dogg would immediately fall into 
Dying convulfive fits • but be as foon reviv'd again by the renewing the fulnefs 
of his Lungs with the conftant blaft of frefh Air. 
Towards the latter end of this Experiment a piece of the Lungs was cut quite 
cflf; where *twasobfervable, that the Blood did freely circulate, and pafs tho- 
row the Lungs, not only when the Lungs were kept thus conftantly extended , 
but alfo v/hen they were fuffer'd to fubfide and lye ftill. Which feem to be 
Arguments, rhat as the hare Motion of the Lungs without freflj y^/r contributes 
nothing to the life of the Animal, he being found tofurviveas well, when they 
were not mov'd, as when they were ; fo it was not the fubfiding or movelcf- 
nefsof the Lungs, that was the immediate eaufe of Death, ortheftopping 
the Circulation of the Blood through the Lungs, but ihcwmo^ a fufficient 
fuffly of frefh Air. 
1 {hall fhortly further try, whether the fuffering the Blood ro circulate, 
through a veffel, fo as it may be openly expofed to the frefh Air, will not fuf- 
fice for the life of an Animal ^ and make (ome other Experiments, which, I 
hope, will throughly difcover the Gennine ufe of Refpration • and afterwards 
a)n{ider of what benefit this may be to Mmkinde. 
FINIS. 
In the S-^rOr, 
Printed by T.V^ hvfohn Martyn,2.i the Bell 
a little without Temple -^ar, and ^atha^ 
niellBroo^ at the Angel in (jreJham^Colledge^ 
i66j. 
