[Integral marginalia:]
1
London, Augst. the 24th.
The Velocity of an Iron Ball about 2
Inches Diameter being let fall, was found by an accurate Instrument to move 15
1/2 foot in a 2d minute of time.
[ 'And 38 foot' deleted]
This Experiment was made &
repeated at
the Turret in Chelsy[space of 3 lines]
[Integral marginalia:]
2
We went to the Schooles
<at Oxford>[in Boyle hand] & with an exact
Instrument where single Vibrations were half seconds, we measur'd the encrease
of[altered from '&'] velocity of
a descending Ball of Iron fastend by a string to the Instrument, & for the
most part our Observations agreed in this That in 4 single Vibrations &
[ 'e' deleted]very little more, the Iron fell the height between the
Battlements of the Schoole
[ '& the' deleted] & the Pavement amounting to
[ '35 feet, & letting fall the Iron' deleted] 56, then we shorten'd the
String & made it sometimes 36, sometimes 35 feet, & leting fall the
Iron we found as we expected, that it fell downe that length in 3 single
Vibrations, & when the length was 36 the Pendulum seem'd to begin to be
upon the returne. The same Ball let fall from the Tower
[of][tear at edge of page] the
Schooles where it is 80 foot high appeard to fal[l][tear at edge of page] somewhat less than 5
semiseconds
<or perhaps in 4
[ 'half &' deleted]> & a half. And by
[the][tear at edge of page]