124

(6)

And of this kind were all those Instruments wch. He had since
this Last meeting of the Society indeauourd to Explaine & shew vnto
them. Such /were/.. . . the microscopes wch. he had there exhibited wch. would as
much exceed the common ones as they did the naked eye and consequent
ly were an improuement of that sence wch. is the most Spirituall.
of all /the 5/. Such were these poyses newly explaind and such was the
Barometer wch. he was preparing, for that thereby multitudes
of mutations of the pressure of the air wch were wholy impercep
=tible to the common Barometer would by /it/this be Discoured. And
that this is not meerly conjecturall. he .. affirmes that by an
instrument of this kind he hath Discouerd such mutations and mo
tions in the atmosphere as were very surprising and very signifi
cant. Such as was a tremulous motion of the said Barometer before
a great insuing storme wch. could /in/ noe wise be ascribed to any shaking
of the house from wind or the passage of carriages neer the -
place wch. was purposely taken notice of

The expt. for the next Day propounded by mr Hooke was in order
to Explaine the Phenomena of the Grauitation of the air and
the Differences thereof caused by the rising of vapours from
the Earth concerning wch. .. . . he affirmed he had shewd
seuerall Experiments and he supposed they were vpon their Re
gister booke but notwthstanding there hauing been much Debate
concerning that Matter, and seuerall persons there present not
being soe will satisfyd concerning the manner, Reasons, and
significancy thereof It was iudged Conuenient that It should
be prepared by the operator. -

[In margin]Dec: 13. 1677  

Ref: CELL/RS/HF_126  © Centre for Editing Lives and Letters