434
Dr. Wallis sayd that they found the Latitude of Oxford now not to be
more than 51
o 4
'6. where as Diuers haue put it neer 10 minutes
more. M
r. Smith
sayd that Con
stantinople was now found
to be 40
o: 5
'7. whereas it is put in many mapps in 43
o. 0
'0.
A second Letter of Mo
r. Iu
stell to M
r. Hooke was Read, Giuing an account
1. of the German Phy
sitian that Di
stilled the matter taken out of a
plague sore. 2
d. of the Artist that had made a Burning Speculum
of 3 foot 8 inches Diameter who
se focus was 3 1/2 di
stant.
D
r. Gale was De
sired to Returne an an
swer to the said Letter w
th.
the thanks of
the Society for his communication and to send him an
swers to w
t he De
sired.
This occa
siond some further Di
scour
se about the magneticall vari
ation of the needle as al
so of the be
st form of Dipping and
variation needles.
Cap
n. Wood
said that his needle was soe orderd as to set it
self
in the meridian and Soe to find its owne dipping. which was
concluded to be the Be
st way.
The same affirmed that the Island of Huas which was almo
s[t]
all magneticall Did notw
thstanding not at all cau
se any vari
ation of the Compa
sse at sea very neer to it
The same al
so affirmed that he had found the variation of the needle
at Flores & Coruo which was formerly nothing now to be 9
Degrees we
st wards.
M
r. Hooke produced his new Leuell & explained the same
And shewd wherein he conceiued it was beyond any kind
of Leuell yet made both for plaine
sse certainty & Exact
ne
sse.
[In margin]Notes of April 29. 1680.
Entred.
Ref: CELL/RS/HF_436 © Centre for Editing Lives and Letters
