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mr. Hooke was orderd not to fail to bring in next Day a List of expts to be made
in the new engine for the condesation of air -
Apr. 22. 1663. mr. Hooke brough in 2 microscopicall obseruations one was
of Leeches in vineger, the others a blewish mould vpon a mouldy peice of Lea=
ther: (mr. Boyle)shewd a carued box of wood. first softned & then hardned)
The Obseruations /made by/ of mr Rooke of the satellites of were said to be deliuerd by the Bip of Exeter
to Dr Pope who was disired wth. mr Hooke to continue them as they had opportunity.
my Ld Brounker Sr. R moray. mr Ball Dr. wren Dr. Pope Dr Crone & mr Hooke were desired to
name the next meeting some signe or Part of a signe of the Zodiack that they would
vndertake to suruey -The expt. of the not subsiding of water purged from air to be made against the
next Day. As also that of making the air extracted out of water relapse into
water.
Dr. Goddards stale vineger stepped 5 or 6 days killd all its Leeches.
mr. Hooke produced 2 microscopicall obseruations. 1 of a mine of Diamonts vsuall in flints
the other a spider appearing to haue 6 eyes. but this Latter was not yet perfectly drawn.
Dr. wren was desired to acquaint mr. Hooke wth. the Apparatus & progresse he had made
in the Expt. of hatching eggs by the equall & moderate heat of a Lamp in order to pro
secute the expt. which was said to haue been soe farr aduanced as that thereby blood
was produced in eggs. -
In the suruey of the Zodiac my Ld. Brounker. & Sr R moray assigned to themselues Sagitary
mr Ball Libra, Dr Pope & Dr Crone Aries. Dr. wren & mr. Hook Taurus.
may. 6. 1663. Boyle Expt. spt. V. & camphir. burn. bubble sinking by ___sing water
mr. Hooke exhibited a microscopicall obseruation of a femall gnat Discerned from the male
by the bignesse of her body. that of the male being thin & lank and the male hauing
also a tuft. The same being demanded whether he had Rd from Dr wren the way
of hatching eggs by a Lamp answered that he had Receiued it in good part and
that Dr. wren had promised to communicate the rest to him also.

sr. R moray mentiond that my Ld sandwich had assured him that at the Depth of 60 fathom
6 . . . /men/ could pull vp an anchor which when it came neer the surface 10 men could
hardly Doe) mr. Hooke was orderd to bring in some Expts. vpon euery head of those

[In margin]Vz   querys he brough in writing this Day concerning the compression of Air in order to make

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them in the compressing engine. . the said Querys were orderd to be entred.may. 13. [mr. Henshaw how an Italian hardned tooles to cutt porphyry in Brancha Vrsina).
mr. Hook made two expts. one of a carp included in a vessell of water out of wch. the air was
exhausted the other of extracting air out of water, which air after some time - will
relapse againe into water, he was orderd to bring in the success of these Expts. in Writing
The expts. for the next Day were appointed, that of Descending bodys in a Rr. emptied of air. 2 that of
putting water purged of air into the engine 3 of Condensing air in the new compressing Engine
4 of killing a mouse or frog in the said engin.
may. 20. mr. Hook added that blowing a glasse ball wth a Lamp after it was come to a certain
degree of heat, he had heard a sound in it like that which is made in the expt. of draw
ing a wett finger about the Lip of a glasse wth water which there by that pressure is
made to frisk obseruing farther that the glasse being all red hott the noyse ceased
but returning in the cooling to the former degree ^ /of that it/ was heard againe till it became
cold and soe Ceased. -
mr Hooke produced 3 microscopicall Obseruations. the head of an ant a strange fly like a gnat
and the point of a needle. Dr. Goddard produced a curious peice of petrifyd wood giuen to mr
Hooke to haue it cutt euen to see whether it will polish
may. 26. mr. Hooke was charged to Look vpon sage wth a microscope and to obserue whether there
did lurk any Little spiders in the cauity of the Leaues that might make them noxious

Ref: CELL/RS/HF_009  © Centre for Editing Lives and Letters