( 1 6 1 } 
Gemini an Mont an a- i, as may be feen in his Italian TreatiTe 
about it, foon after pub! ifned at Bononia. He obferves that 
at Bononia, itsgreateft Altitude in the S. S. E. was 38 Degrees, 
and at Siena 58 to the N. N. VV : that its Courfe by the Con» 
currence of all the Obfervers was from E. N. E to W. S. W. 
that it came over the Jdriatick Sea as from Dalmatia : that 
it croft overall Italy, being nearly vertical to Rimini and Sa- 
vigniano on the one Side, and to Leghorn on the other : that 
its perpendicular Altitude was at lealt 38 Miles: that in all 
Places near thisCourle, it was heard to make a hilling Noife 
as it Ron zare, Far ft repit 0 comme un faoco art ificiale, Ft friar c 
per aria comme un Raggio di polve ; that having paft over 
Leghorn it went off to Sea towards Cor fie a, and laftiy that at 
Leghorn it was heard to give a very great Blow ,7 'uono di maggior 
rumore di grojfaCannonata-, immediately after which another fort 
of Sound was heard like the rattling of a great Cart running 
over Stones, which continued about the time of a Credo. 
He concludes from the apparent Velocity it went on with as 
Bononia , at above 50 Miles Diftance, that it could not be 
lefs fwift than 160 Miles in a Minute of Time, which is 
above Ten times as fwift as the diurnal Rotation of the Earth 
under the Equinoctial, and nor many times lefs than that 
wherewith the annual Motion of the Earth about the Sun is 
performed. To this he adds the Magnitude thereof, which 
appeared at Bononia bigger than the Moon in one Diameter, 
and above half as big again in the other ; which with the 
given Diftance of the Eye, makes its real lelier Diameter 
above half a Mile, and the other in proportion- This fup- 
pofed, it cannot be wondred that fo great a Body moving 
with fuch an incredible Velocity through the Air, though fb 
much rarified as it is in its upper Regions, fhould occafion fo 
great a hilling Noife, as to be heard at fuch a Diftance as it 
feems this was. But ’twill be much harder to conceive, how 
fuch an impetus could be impreffed on the Body thereof, which 
by many Degrees exceeds that of any Cannon Ball ; and how 
P d~ this 
