83
Mr Smethwick was encouraged to make further
progre
sse in his Glasses of a conical figure, he hauing
lately made
. . . a smal obiect-gla
sse of
tht section
fit for a
glasse ^ /tube/ of 2. inches.
Dr King brought in
the artificial figure made of plaister
of Paris, of
the
sh. . natural Calculus of
the Bladder, weighing
32. ounces, taken out of
the body of Mr Niclas Byfield:
concerning wch he
was de promised to
bri giue in the
whole history.
This artificial stone was committed to Mr Hooks care
for the repository.
Experimts for next day: 1. The ^ /new/ watch aboue mention'd.
2. A picture in the
Dark darkned Box. 3.
weigh Descent of
Bodies ^ /in water/ 4. Scales for weighing bodies in ^ /air and/ water.
june 30. 70.
The Curator produced again his new ^ /pocket/ watch, wch he affirmed to
be equipellent to a Pendulum.
He The equality of its motion
being tryed, and not found
to answering expectation, it was orde,
red to be perfected against
the next meeting, and then tryed again.
There was tryed the comparatiue weight of ^ /hammered/ Lead to water
The Lead weighed in the Air one ounce and three grains; in water,
seven /drams/
eights of an ounce /and
and . ..3/4/
24 3/4 grams;
the difference being
35 1/4 grams by wch it appears,
tht Lead is to water as 13 2/3 to
one, or as 41 to 3.
[In margin]I find
the
differ. 38 for
proportion or
12 27/38 to 1
or 12 3/4 to 1
It was order'd,
tht several Bodies should be prepared against
the,
weight next day, and amongst
thm some metallin ones, both hammerd
and cast,
and of many different figures to be weighed in
wa Air
and water, both common and distilled. And
tht
thm ^ /the/ Experimts
tht th should be made at home, and when ready, shew'd to the
society, to be attested by
the whole Body
Mr Smethw
th and Mr Collins were call'd upon for what they
promised to bring in concerning
th Expts of this kind made by others.
They promised to giue it in as soon as they could.
Mr Oldenburg
promised presented from Dr Bayle of Tolose a Book
entitld Dissertationes ^ /medica/ tres, de Causis Fluxus Menstrui: Mulierum:
de sympathia variarum corpous partium cum Utero: de usu Lactis
Ref: CELL/RS/HF_085 © Centre for Editing Lives and Letters
