90
and kept it self Di
stinct from the air. -- M
r Newtons Letter of Feb: 20. was read promi
sing an answer to M
rHookes obseruations vpon his new theory of light and colours. It was orderd to be entred. [S
r Malpighis letter about Eggs
-- The Curator was desired to pre
sse M
r. Cox to expedite the 6 foot gla
sse after M
r Newtons way. The same was al
so de
sired
to produce the next Day before the Society the experiment of Representing a Blew & Red Colour in 2 wedge like boxes
Feb: 29. 1671/2. The Exp
t of the Last Day, shewing the steam about the flame of a candle di
stinct from the
smoke & air was Repeated, and proued satisfactory. The Curator of it was Ordered to Giue in Writing the Way
of Representing this Exp
t. --- The same proposed a way for a speedy conueyance of Intelligence from place
to place, by the sight a
ssi
sted with tele
scopes, to be imployed on high places by the Corrrespondents using a
secret Character, proportiond in Bigne
sse according to the Di
stance they are to be seen at &c. - The paper
of this propo
sition, and the particulars of the manner of Practi
sing it were Read, but not Left by the propo
ser
to be registred, but taken away by him. Orderd that some Exp
t. be made of this proposition at the next meet
-ing which the Curator promi
s ed to Doe.
March. 7. There was made an exp
t. of the method formerly proposed by m
r Hooke of Speedy conueying intelligence
from place to Place, which was performed from Arundell hou
se garden to a boat lying neer the Shore on the other
Side the Thames by letters of a foot Long and Gla
ss es of two foot long, the di
stance being about half a mile.
The contriuance was applauded as very ingenious, and the authour de
sired to make more tryalls of it at grea
-ter Di
stances. -- the President Obiected, that the u
se of it would be often hindred by hazy weather - Others did
intimate that the greate
st Difficulty in the practi
se of this way would be in proportioning the gla
sse & the
Letters. viz
t at what Di
stance a gla
sse of such or such a Length, shall di
scouer character of such or such a bigne
sse
[D
r. King thinks galls a fruit, others iudge them causd by Insects M
r. Hooke promised to shew next day something hauing
neither Reflection nor refraction, and yet be Diaphanous
Mar. 14. D
r Tillotson admitted. M
r Cock was orderd to make for the v
se of the Society a tele
scope of m
r Newtons way of 4 or 5
foot which he promisd to get ready in a fortnight. [al
so to contract about a large concaue) - M
r Hooke brough in a De
scription of an Exp
t formerly shewd before the Society & de
signed to proue that the sub
stance of a candle or Lamp is dis-
solued by the air, and the greate
st part thereof Reduced to a fluid of the form of air. He was thanked for this paper w
chwas orderd to be registred (Reg. 4. p. 126.) He promisd to bring the next Day an Exp
t to shew a phenomenon not vnlike
this, to be produced by seuerall bodys Di
ssolued in oyle of Vitrioll. The same shewed a pritty phoenomenon in a bubble
rai
sed by water & sope, wherein there appeared Something at the top, that had neither reflection nor refraction yet was diapha
-nous. M
r Hooke was desired to bring it in in Writing, with his thoughts therevpon [Pecquets discouery]
Mar: 21. [heuelius of a new comet [newtons letter about his tele
scope. [Boyle of shining flesh.
Mar: 28. 1672. - The Curator brought in his written Account of an Exp
t. or Obseruation formerly made vpon a bubble of
water & Soap. He was thanked for this De
scription which was orderd to be entred. -- The same made an Exp
t. of Di
ssoluing
Sal niter in c
omon water, wherby was cau
sed a Streame compo
sed of water and of the particles of Niter di
ssolued ther
-in, which stream was here De
scending, as in a former Exp
t a stream or fluid produced by a candle di
ssolued by
the air
Did a
scend. He was de
sired to bring in the De
scription hereof in writing. [newtons letter ab
t. his tele
scope march 26 [Ca
ssinj Ob
servation of
the Period of
theSpot in

. 1. e. 9
h. 56'.] It was Lookd vpon as a Considerable thing, though withall it was taken
notice of that the same spott had been di
scouerd here by M
r. Hooke before any thing was heard of it from abroad
as appears by what was printed thereof in the Philosophicall transactions 1665 in Seuerall places.
Ap. 4. The Curator made an Exp
t. with 2 pieces of Gla
sse Stifly rubbed vpon one another to shew that there may
the same incidence of Rayes & yet various colours. he was orderd to bring in the Exp
t. in writing the next Day.
together with his considerations vpon it as al
so to doe the like as to the exp
t. formerly made with Sal niter
di
ssolued in c
omon water. [Swammerdams paper of the utervs. [newtons answer to french obiecti
os and of a pri
sm eye
gla
sse &] orderd
tht - The Curator take care to make such a chrystalline prisme &c [grews paper about Snow]
Ap: 11. noe meeting Apr. 18. The Curator was Ready to make an Exp
t by a prisme redy to Destroy all colours by one prisme
that appeared before through another but there being noe sun as was nece
ssary the exp
t. was putt off to another time
Pardies objecti
o to newton. newtons answer to it: another of newton. Malpighis lett
r. Cock his tele
scope concaue imperf
The Curator propo
sed a way of making the S
d Reflecting concaue in Great number and poli
sht by the meanes of
two Dyes one concaue
the other conuex putting between them a plate of Siluer & then Stamping it w
th. the Mint Mill
It was doubted by S
r. R Moray whether it would be polisht this way & keep its figure. however it was though worth
trying. [about Hudsons Bay Observati
os. the Weekly meetings to be wensdays. Grew proposed a Curator for plants for
one year by BP. Chester
Apr. 24. Ca
ssinj & Vern
o proposd] The Curator shewed 2 exp
ts. of colours with 2 pri
smes. by the one it appeared
that one prisme tooke off the colours which the Other had produced by the other that Seuerall Colours were
made by seuerall Refractions. Orderd that the curator doe giue in the particular description of it to be regi
stred
[Ca
ssinis letter of permanent spott. [cornelios letter from Naples
May. 1. Willis de Anima Brutor
u [li
sters Letter of Stone under
the tongue . & of their wormes. [townlys of Weather
May. 8. M
r Willoughby wormes in all animalls. [newton of Ca
ssigrans Reflex tele
scope] Cock a steel polisht for Reflex tele
scope
the curator was de
sired to make tryall with it though he sayd it was falsly polisht.
May 15. Grew of`
the secundine of seeds. Smethwick refracting instrument. M
r Hooke made some exp
ts. relating to m
r Newtons
theory of light & colours, which he was desired to bring in writing to be registred.
May. 22. Ca
ssinj elected & M
r Vernon. [grew of
the pith of plants. S
r. R Moray of Cacao trees] M
r Hooke made some more
Exp
ts. with 2 prismes confirming what m
r newton hath written in his Discour
se about light & colours viz
t that the rays of
light being separated by one Prisme into Distinct colours the refraction made by another prisme doth not alter tho
se Colours
It was intimated by the same that the
se Exp
ts. were not cogent to make light consist of Different substances or Diuers powders
as 'twere but that tho
se phoenomena might be explicated by motion of bodys propagated.
Iune 5. Coniers speaking trumpet.
Iune 12. Grew
the spirall ve
ssells. Sw
amerdams book. Perpetuall Lamp.] M
r Oldenb. presented m
r Newtons answer to M
r Hookes
considerations vpon his Doctrine of light & colours, which was Read in part and ordered to be copyed for the peru
sall
of D
r. Wren & M
r. Hooke. and then to be registred with thanks to the author. M
r Hook was put in mind to bring in
next Day, some experiments that Did not Depend from the shining of the sun, together with tho
se that Required Sun ^/shine/
Iune 19. There was read a Description giuen by M
r Hooke of seuerall Exp
ts Lately by him shewn to the Society. The pa
[In margin]q
r. per was orderd to be registred. He was de
sired to make more exp
ts. of the like nature for a further examination of M
r Newt
os
Doctrine of light & Colours especially such as may make it out that Colours may be varied by Diuers positions of the
eye, as al
so tho
se that are made with plated bodys, shewing that the same inclination and the same thickne
sse
will giue various colours, and further tho
se that shew in a Dark Room that where there is noe refraction nor Reflextion
there will be a succe
ssion of colours, soe that the Rays pa
ssing only a hole colours will appear. Dr Goddard Mr Coniers
& M
r. Hooke hauing made Draughts of speaking trumpets &c ---- and m
r. Hooke was al
so de
sird to make a tryall of his figure
[Vo
ssius about bells. Hevelius Letter about Comets
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