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Iune 13. Society sat not. Iun 20 1667./ mr. Ball was desired to make the magnetick Expt. formerly
discoursed of by mr. Hook. He said Dr. Cotton had sent a Loadstone to Society of 160ll weight for a terrella
chosen out of aboue 2000ll. of the same stone. tht twill moue a needle at 6 foot distance they came from
a little round hill in Cornwall where is also an iron. The water in the mine is of a reddish colour and there is
a mixture of greenish stone in the mine. also a shining marry colourd stone like an amethyst) Discourse
being had of the way to make the Expt. of opening the thorax of a dog & preseruing his life for
some time by blowing into his Lungs wth. a pair of bellows. mr. Hooke reported a former Expt. of his
that he had taken away all the ribbs & the Diaphragme. & left only the spine & great vessels & that the
expt. succeeded soe as the dogg liued some howres by blowing into his lungs wth bellows but as he ceasd
to moue the Lungs soe the dogg presently fainted and would reueiue againe vpon a fresh agitation
of the Lungs. orderd that Dr. King be desired to ioyne wth mr Hooke to make this expt. before the
Society at their next meeting. (Dr. King about expt. on a catt) mr Hooke acquainted the Society
that a friend of his had made many Expts. of Respiration of which he was desired to giue the Society
an account at their next meeting. mr Hooke tryd the Expt. he had Lately been charged wth. vizt to
take away the sharpnesse of vinegar. & to reduce it to a reall sweetnesse by putting into a little
quantity of vinegar some red Lead in powder, the euent was that the sharpness of the vinegar
was much abated but not wholy Discharged, while this Expt. was making mr Henshaw desired
that seeing vinegar was supposd to be wine depriued of its spirit the Violl might be close stopt
to Discouer whether the acrimoneous parts did precipitate or euaporate vpon putting in the Red
Lead. vinegar & Red Lead Distilled gently yeald a flegme wth. a strong a very acid spt. there is the a kind
of Sulphur in viniger. & Sac: dissolued in water while yor hand or a cloth is wet with it will
smell sweet of the Rose, but after tis dry will smell like strong vinegar) merret Rhenish wine. &
steel turnd to vinegar but kept 2 years returned to its tast but lookd red like claret. Expt. for next D
1 of the Dog aboue mentiond 2 expt. of Infusing steel in sharp menstrua also crustaceoes as eggshell
oyster shells &c. - -
Iune 27: 1667. mr. Hooke made some expts. to dulcify vinegar by infusing the filings of Lead
eggshells brasse steeldust oystershells in seuerall violls with vinegar All which did much depriue the
vinegar of its acidity and Reduced it to some kind of vinosity. orderd that these Expt. be further prosecuted
against next day. mr. Ball is desired to send the Loadstone Lately sent by Dr. Cotton to mr Hooke who is
to take care to haue it well wrought into a terrella. (Bp. Exeter tht tin mines Run east and west) Mr Willouby
that coles run also in the same manner) Dr. merret confirmd it but Lead ore north & south. ) Willougby that mines
Rise west w: & deepen eastward.) mr Hooke Reported that he had obserued Clifs of stone for neer 4 miles
together that their naturall position was horizontall though in some places he found them Ly much
sloping and in others perpendicular which he beleiues might fall into those odd positions by some
great earthquakes and he is of opinion that the great hills & mountains haue been raised by Earth
quakes. He mentiond a clif in the Isle of wight whose bottom is washt by the sea wherein at a pretty
depth below the top and at many fathoms aboue the surface of the sea he found shells of seuerall
sorts which he thinks may possibly haue been placed there by earthquakes remouing the superficiall
parts of the earth Rasing the bottom of the sea and sinking the surface of the Land. (Bp. of Exeter that
those shells might be carryed thither by subterraneous Canalls. vpon this Discourse of earthquakes some of the
Company were of opinion that the great Lakes might be made thereby. mr Hooke related out of Varsenius
his Geography, that in china a Lake of 30 Leagues ouer was made by an earth quake the earth then
sinking and in another place for the space of 40 Leagues the earth did shake all at the same time
(A hill in Switzerland Remoued by an earthquake wth. the vines and trees stilll on it. Dr. wren. tht a
Lake in Italy of salt water neer 150 fathoms deep. svpposed soe from the salt dissolued of the earth. B.P. of
exeter that the sea was salt for the same reason). mr Hooke Reported that he had taken a whelp out
of the vterus, and dissected it in the euening, and the heart did beat the next morning. when he came
to Look on it againe. Dr. wren obserued that flyes will Run Away after their heads are off. if you cutt off
the tayle only they will Liue a day. but if stabbd in the body they quickly Die all the muscles lying
about the brest as also in crabs &c. he mentiond also tht the blood of insects is white and what appears Red
is Excrements. some insects killd by worms, all insects dead breed mites. - -        mr. Hooke is of opi
nion that there is a nitrous quality in the air, which makes the refreshment necessary to life which
when spent & intangled the air becomes vnfitt. He Related the account of the expt. formerly made wth.
the fire box & bellows. that after a whole dayes keeping fire would not Burne in that air till the grosser
parts thereof were precipitated. - -         It was proposd by mr Hooke to haue a rare
fying engine. made of wood big enough for a man to sit in. approued by mr. Boyle mr
Hooke thought such a one might be made for 5ll. he was desired to haue it made as soon as
maybe. mr. Hooke propounded a contriuance he had to make a vessell to swim in vnder water of
any Dimension wherein he might passe as fast as in a wherry vpon the thames and at any depth
he pleased wth safety. he was orderd to compute the charge of such an engine and Report it to
the society at their next meeting. (mr. Ball. sparrs, diamonds, asbestus, murrey stones out of the Loadstone
mines. deliuerd to mr Hooke for Repository. Expts. for next Day. mr Balls Loadstone opening dogs thorax. Infusion
of vinegar &c.
Iuly. 4. 1667. mr Hooke was desired (Dr. King being absent) to Ioyne wth any physitians of the Society and make it

without faile next Day.

Ref: CELL/RS/HF_065  © Centre for Editing Lives and Letters