199

may 2. 1678

mr. Henshaw the vice president tooke the chair

The minutes of the Last Day being read wherein mention was made of the
Parabolical figure Described by a bullet and inquiry being made what
Inclination concerning the figure proper to each inclination It was shewn
that the figure described by a bullet shott wth any inclination whatsoe
uer was a parabola. - -

Vpon occasion of a Discourse about Respiration. Dr. Croon mentioned an
Exp[t. made by Dr. merret of keeping young puppys a long time wthout
Respiration by suffering them to Remaine in their secundine after they
were taken out of the Dam. this Obseruation mr Hooke confirmed
from his own tryall and added that he had found the heart of one
of them beat the next morning wch. he had taken from the Dam
the night before.

Dr. Croon hinted that a creature might be stifled before the foramen ouale
might be /could/ could be closd

To wch. the vice president Answerd that It twas a question whether the
foramen ouale might not be closed before the Birth because it had
been obserud that to beclosed immediatly after it was born. and therefore it was
not probable it could be done soe suddenly

Dr. Croon supposd there were other vses of the foramen ouale then hath been
yet ascribd to it, for he had obserued that the blood did circulate through
the Lungs as well after the Exhausting ^ /the air by the wind pump out/ of them as before, soe that
he supposed also that euen before the child had breathed there might be
made a circulation of the blood euen through the Lungs of the
foetus.

vpon this occasion much was Discoursed about the fabrick of the
Lungs and how the air could might be cleane drawn out of them
by the aforesaid Engine pump. though it could not be expressed out
of them by pressing them wth.out breaking the Little bladders -

mr. Hooke explained the reason why this /effect/ operation might be per
formd the one way and not the other, and that was first that
the Little bladders out of the which the Lungs were composd were
joynd on to the branches of the aspera arteria like leaues to the -
sprig of a tree that the holes by which the aspera ateria & /each of/ these blad
ders were comunicated open and close according as the /. . ./ bladders -
were more or Lesse expanded but that they became perfectly closed
vp when the bladders was not bigger then such a determinate
magnitude.

Ref: CELL/RS/HF_201  © Centre for Editing Lives and Letters