1own, or but conſequent to the motion of the
Thorax, Diaphragme, and (as ſome Learn
ed Men would have it) the Abdomen; And,
Whence it is that the Air ſwells the Lungs
in Inſpiration any further then they may
receive light from our Engine: But that
it may appear what kinde of ſervice it is
that may be expected from it on this oc
caſion, we muſt premiſe a few Words to
ſhew wherein the ſtrength of the Obje
ction we are to anſwer, lies. In favor then
of thoſe that would have the Lungs ra
ther paſſive then active in the buſineſs of
Reſpiration, it may againſt the common
opinion be alledg'd, That as the Lungs be
ing deſtitute of Muſcles and of Fibres,
are unfit to dilate themſelves; ſo it ap
pears, that without the motion of the
Thorax they would not be fill'd with Air.
Since as our Learned Friend Dr. High
more has well (and congruouſly, to what
our ſelves have purpoſely try'd) ob
ſerv'd, if a live Dog have a great wound
made in his Cheſt, the Lobes of the
Lungs on that ſide of the Mediaſti
num will ſubſide and lie ſtill; the Tho
rax and the Lobes on the other ſide
of the Mediaſtinum, continuing their
former motion. And if ſuddenly at once
Thorax, Diaphragme, and (as ſome Learn
ed Men would have it) the Abdomen; And,
Whence it is that the Air ſwells the Lungs
in Inſpiration any further then they may
receive light from our Engine: But that
it may appear what kinde of ſervice it is
that may be expected from it on this oc
caſion, we muſt premiſe a few Words to
ſhew wherein the ſtrength of the Obje
ction we are to anſwer, lies. In favor then
of thoſe that would have the Lungs ra
ther paſſive then active in the buſineſs of
Reſpiration, it may againſt the common
opinion be alledg'd, That as the Lungs be
ing deſtitute of Muſcles and of Fibres,
are unfit to dilate themſelves; ſo it ap
pears, that without the motion of the
Thorax they would not be fill'd with Air.
Since as our Learned Friend Dr. High
more has well (and congruouſly, to what
our ſelves have purpoſely try'd) ob
ſerv'd, if a live Dog have a great wound
made in his Cheſt, the Lobes of the
Lungs on that ſide of the Mediaſti
num will ſubſide and lie ſtill; the Tho
rax and the Lobes on the other ſide
of the Mediaſtinum, continuing their
former motion. And if ſuddenly at once