381
Ian: 1: 1680
This being the society met not
Ian: 8. 1679
S
r. Christopher Wren vicepres
t. tooke the chair
The minutes of December. 18 La
st were read, wherein mention
being made of the Present of S
r. Rob: Southwell of Sign
r.
Vivianj booke to
the Societys Library m
r. Hunt was orderd to waite vp
o S
r. Robert for it.
mr Hunt brought in the Globe presented by m
r Moxon fitted w
th a
ca
se to stand ^/always/ in the Room where the society shall meet.
m
r. Hooke read another Letter of his to m
r. newton conteining some
further account of his theory of circular motion. and attraction
as al
so seuerall obseruations and deduction from that theory. as first
that Pendulum Clocks must vary their velocity in Seuerall climates
and
.... that they could not give /2ly/ that this variation mu
st al
so
happen at Different heights in
the same climate, which last he
confirmed by an obseruation of m
r Haly at S
t. Helena. and 3
ly as a con
sequent of the
se that a pendulum was vnfit for a
vnvniver
sall standard of mea
sure -
m
r. Pappin being by at the reading of this Letter related that a person
Imployd by
the Royall Academy at Paris to try Pendulum Clocks in
Places neer
the Line found them to goe much too slow. and that the
said Accademy Doubted the truth of the fact but suppo
sed he had
been some way mi
staken though he w
th much confidence affirmed the
matter of fact to be true but knew noe reason for it.
m
r Hooke also Read a Letter of m
r Ball giuing an account of his -
thoughts concerning the hypothesis of mo
r. Mallement.
M
r. Ti
son Read the first part of his obseruations made vpon the Di
ssection of
the Porpi
sse. he was thanked for the great Paines and care he had ta
ken therein, and the Remaining Part it being Long & the time much
spent till another meeting. And it was orderd that his account should
be Enterd in
the Regi
ster.
m
r. Hooke shewd an Exp
t. De
sired to be seen
the Last Day. viz
t. the putting of
camphire into aqua fortis whereby that Gum is presently conuerted into
an oyle and Swims in that forme vpon the aqua fortis.
Ref: CELL/RS/HF_383 © Centre for Editing Lives and Letters
