389
Feb: 5. 1679
S
r. Ioseph Williamson In the chair.
D
r. Heusch & M
r. Hauton subscribed and were admitted by the President
M
r Perkins al
so was cho
sen by the Ballot subscribed & was admitted
The minutes of Ian: 29 were Read, and seuerall matters were Di
scour
sed
about the melting of metalls. M
r. Henshaw Related that Sulphur was
very De
structiue to most metalls as that it would melt Iron and make it
Drop. that it would calcine Siluer soe as to make it hard to be reduced.
The method of making experiments was al
so further Di
scoursed that
they should be made in order to proue a theory propounded but
S
r. Will
m: Petty was of opinion they would be more faithfully
made & Deliuerd if they were not made to help out a theory
becau
se that might prepo
se
sse & Bia
sse the experimenter
M
r. Hook gaue an account of some other qualitys he had taken
notice of in the mixture of tin & copper. As first that the co=
lour of the copper was quite de
stroyd it appearing much of the co=
lour of Iron when poli
shed. 2
ly. that the compo
sition which was
made of two very malleable metalls when mixt became very fri
able & brittle. 3
ly. that It bore a pretty good poli
sh and Reflecti
o 4
ly. that though copper was exceeding hard to be melted yet this mixture
melted very ea
sily. 5
ly. that viewing the poli
sht surface of it w
th a gla
sse he found it very full of very small holes or blebbs in the
metall.
S
r. Theodore De vaux was De
sired to bring in such papers as he should
think fitt and order should be taken to haue them fairly Coppied
out into a book by them selues in order to be pervsed & that
then the Papers should be
safely Deliuerd back to him
againe.
Then being a Di
scour
se about the nece
ssity of hauing some conueniences for
making the Exp
ts. of mixtures of mettalls. M
r. Henshaw was plea
sd
to promise the Guift of a small pair of smiths bellows which he had
by him:
The experiment of the mixture of tin & Copper was De
sired to be
made the next Day.
Sign
r. Viuianj Booke presented by the Authour to the Society was
sent in from S
r. R Southwell. D
r. Gale was De
sired to send the
Societys Thanks to the Authour, as also to take care about sending
the Societys thanks to the Grand Duke for the booke of the Torpedo
M
r. Hooke Read An account of the Exp
t. that was made on munday la
st
by M
r Hill, D
r. Croone & M
r Hooke which was orderd to be enterd into the Regi
ster.
Ref: CELL/RS/HF_391 © Centre for Editing Lives and Letters
