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of Inclination. And that shooting at 20 degrees would
fly much farther then shooting at 70. the reason of wch
was the Density and Resistance of the Air to the body
passing through it whereby that wch. was shot at 70 foot
passing through a greater quanitity of Air Receiued
a greater impediment & hinderance from mouing ex-
actly in a parabolicall line then that wch. was shot
at 20.
Sr. Ionas more farther alledged that the Differing den
sity of the air at one time more then another would
cause a greater impediment and Deuiation of the
bullet at that time more then at another. that
the motion of the air or wind would oftentime bend
the bullet considerably out of its Directed way.

That the hollowness of the shell would many times make
It passe in a curue and not in a straight line.
for that he had seen seuerall expanded Canuasses
set vp all exactly in a straight line and that vpon
shooting Directly in that line he had obserued that a
bullet had passed through the the first & Last and
yet missed all the intermediat by Deflecting either
to the right or left hand side of them.

Then It was moued that some experiments might should be made
at the column at fish street hill of the velocity of the
Descent of Heauy bodys & wt. the Resistance of the air
was to that motion.
mr. Hooke affirmed that he had a designe to make seuerall Ex
periment concerning that and other matters at that place of
wch. he would giue the Society an account. As he had for
merly Done at St. Paules before the fire. He also alledged
that there were in Ricciolj Almagestum nouum a great num
ber of such experiments made at Boronia At the Towre of the

Ref: CELL/RS/HF_194  © Centre for Editing Lives and Letters