( «07J ) 
At a mean we may call the weight of the Glaft 
Ball 5 oz. Troy, and its Diameter $ Inches and - ; and the 
weight of the Paftboard Ball ^ Ounces Troy, and a lit- 
tle more than f Inches Diameter. 
The Lead Balls all fell within near a Foot of one an- 
other, and made an impreffion in the Boards of about 
of their Depth. 
The Barometer flood at 30, i Inches, and the Mer- 
cury was very Convex, and therefore inclined to rife 
ftill. 
A further Account of Experiments made for the fame 
purpofe^ upon the i^th Day of July laft. Dy the. 
fame.- 
H Aving found by our former Experiments, that thin. 
Glaft Balls, and even Balls of pafted Paper^, 
were too heavy to make fo confiderable a Difference 
between the time of their Fall and the fall of Leaden. 
Balls, that it might be eafily Obferv’d ; I contrived a 
way to make dryed Hogs Bladders perfeflly round,, 
by blowing them (when moifl) within a ftrong Sphe- 
rical Box of Lignum Vita, and letting them dry in the 
faid Box before I took them out ; which 1 did by 
opening the Box that fcrew’d in the middle, and had. 
a hole in the Pole of one of its Hemifpheres to let 
the Bladder pafs thro’, in order to tye it after blowing ; 
and feme few fhiall holes all over the Box, that in, 
blowing no Air might be confin’d between the infide 
of the Box and the Bladder, lo as to hinder it from 
putting on a Spherical Figure. Befides I took off the: 
finds of the Ureters, the Fat and a great deal of the: 
uppest 
