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August 1. 1666. a fast. Aug. 8th. 1666. Ld Sandwich Letter. they were Read & commanded to the perusall
of mr Hooke. (Heuelius his books of comets & mantissa. orderd. -- that the Pt. Sr P Neil. Dr. Wallis Dr. Goddard
Dr. Wren Dr. Pope & mr Hooke should be desired to pervse & consider of this Booke and to bring in a Report to
this Society, the Authour hauing altogether Referred & submitted these his Obseruations & Discourses to
their Iudgements. the booke was committed to the care of mr Hooke. there was also read a Letter written
from Paris Iuly. 16. 1666. by monr. Auzout to the society thanking them for the Honor of Receiuing
him into their body. It was orderd that the Secr: should let him know that his Respect was kindly
Receiued. Mr. Hooke exhibited his Obseruations of the comet in the End of 1664 intimating that
he Intended to publish them very shortly. The same produced a certaine contriuance to shew that
the Circular pendulum was made of two streight Lines crossing one another. Dr. Goddard suggested
that the wire mouing in a streight Line, and pretended to keep aequall time wth. the circular pendulu
should moue vpon two points as the other did vpon 4. to be vpon aequall termes. -
The Pt. Reported that the expt. mentiond somewhile since mentioned by mr. Pouey of a new way
of Laying on Colours, had been made this morning by mr streater at his house before himself
Sr R Moray mr Slingsby, mr. Pouey. Dr. Charlton mr Hooke & mr Oldenburg. vizt that an egg was beaten
yolk & white together with a few shreadings of a figtree branch, whereby the egge was Reduced
into an oyly substance without any tenacity or Ropinese, soe that it would be ductile & follow the
pencill. like oyle hauing further this quality, that being mixed with any Colour it would loose its own
in it, and make a picture without any glazing however posited against the light, whereof an Example
had been seen in mr. Poueys house, besides that whereas wth oyle makes all colours yellow in time
& size washes off. this liquor will not suffer the colours to turn yellow nor easily wash off, if it
were kept 2 or 3 months wthin doors to contract some hardnesse. It was added that any thing
of a fig tree, the iuice, a sprig, the Leaues, or the shriddings of a branch would produce this effect
at any time of the year. Dr. merret suggested that it might be tryed whether other Lactiscent
plants especially Acrimonious ones would not perform the same thing, It being probable that
by the corruption of the Iuice of the fig tree the fibres of the egge were destroyed, and the liquor that
was tenacious before made Ductile after. The same mentiond that he had Lately suggested to a printer
a way of Purifying Oyle deliuerd by Senertus vizt by percolating it though sand and that it
succeeded well. such oyle quickly grows Rancid. There was produced a box of seuerall stones & mine
ralls prsented by S R Moray for Repository & Reduced into order by mr Hooke. some Expts. were made
to produce cold wth. seuerall salts. mr Hook affirmed that he had found white salt vitrioll & Alum
had not any sensible virtue to Refrigerate, Sandeuer & pottashes being tryed befor the Company it was
found 1st. that the spt. of wine, in the Thermometer, standing at 1/4 below 1. descended after the throwing
in of 1/4 pound of Sandiuer to the water 1 degr: /in/ about 5 minutes. 2ly that the spt. standing at 3 1/2 quarters
below 1 did after the throwing in of 1/4 pound potashes into 1/4 of water, rise aboue . . 3/4 of a degree
in 4 minutes. At the next meeting mr Hooke was ordered to prosecute the circular pendulum
as also to show his new watch affirmed by him, to be more exact then any pendulum watch
& to produce some water neuts for the Expt. appointed formerly -
Aug. 15. 1666./ The contriuance for the Expt. to shew tht the circular Pendul. was made of 2 straight lines crossing
one another being fitted as was suggested the Last meeting. it appeard that the motion from the one end
of the maior Diameter of the circular pendulum to the same and againe was equall to 2 vibrations
of the streight Line pendulum equall in Length to the former & mouing in the same plaine
(lactescent plants for paints.) sandiuer a great reducer /of/ gold.) Kelp good for Land.) wallis baroscope - fals.) stone Wormes.)
Orderd that mr Hooke should be called on for perfecting his new quadrant of producing a new Sort of watch
more Exact than a pendulum watch of obseruing the Paralax of the earths orb. of presenting magnetick Expts. 1st
for finding out whether grauitation be somewt magneticall, & there whether the magnet will attract at the same
Distance in water as in air. as also whether the Liues of a Loadstones direction are truly ouall -
Aug. 22. 1666. (mercators pendulum for equatio) mr Hooke was desired to bring in next day his new watch which
he formerly mentiond as exact as a pendulum. the same was orderd to obserue whether circular motion
were compounded of sines (stag teers.) Russia lamb plant) ants eggs.) ants hills mites in wheat) ants bite
would kill caterpiller) mr. Hooke mentiond that he had obserued wth a microscope how the Leaping chese maggot
put their . . taile to their mouth & when they leap spring it out wth great force and Leap a great way like
fleas. (De vaux of Enlumineure. Enamelling.). mr Pouey Intimated that at the Societies desire mr Lilly mr cooper and mr streator
would not be vnwilling to communicate seuerall Curiosity & varitys of Painting. orderd hereupon that Sr Th: de vaux mr Pouey
mr Euelyn mr Henshaw & mr Hook or any two or more of them should be desired to meet & consider together what par
ticular were fit to be inquired into and therevpon to inquire of the said masters concerning the same. (wallis letter
about tides) mr. Hooke mentiond a new astronomicall instrument wth it to make obseruations of
Distance by Reflection he was desired to giue order for the construction of it & produce it before the
Society. the same affirmed to haue obserued a kind of shellfish calld Limpits to eat holes in the Rocks of the
sea. about an inch deep Iust of the bignesse of the shell. which was of the figure of a snaile
The expt. of transfusing blood out of one animall into another, being againe mentiond it was orderd that Dr. Ball
mr. Dan Cox Mr. Tho: Cox. mr King & mr Hooke should be desired to vndertake the making of this
xpt. And hauing consi
derd wt. apparatus was necessary to perform it set speedily vpon the work (crone. letter from Steno. scheme of french chariots
ways of preparing alkermis verdigrese & white wax)

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