dy's Solidity 140, each Bafe r/, lias a Convexity 
whofe Altitude is 6.5, therefore the Conoid on each Bale 
is nearly 1 li, therefore d the whole Body is = ( 140 ■+ 
III—) 163, and ^ the entire Altitude of the Body 
=::=^'(4H-.6S -+.65 5.3. The Inner Circumference of the 
Tul3eis 5 014, therefore its Area '^- 2 theLengthof the 
Tube 4.5, therefore the Tube's Capacity 9, there- 
fore C, the Content of the Body and Tube 163 -i- 9 =^ 
172 Cubic Inches, that is alnnoll 2|Quarts. 
Suppole the Air's PrefTure. when ^reateft ~ J0.5 Inches 
of ^ { 30.5 X 14--; 427 jof Water, and /^ ..42^/ 
therefore fc 73444- l*ut a for the Depcli ou^ of the Air 
in the Tube when the Body is juft all immers'd, the Air 
in the Inflrument on Immerfion Contrafts fomewHat by 
the Cold ot the Watery 
this Contraftion I find 
is nCfirly as much as 
would be producM by 
an Addition of 1 Inch 
to the Atmofphere's Al- 
titude 427, this in cold 
Weather, but in warm 
Weather 'tis probably 
twice as much : but we 
will now fuppofe it =^ i, 
therefore the Depth of 
the Surface of the Wa- 
ter in the Tube below 
the Surface of the outer 
Water is ^'h- /i,there- 
fore the PrelTure onthat 
inneiV Surface is as the 
Ailitude of the Atmq- 
fpnere above it z=: f-h i 
+■ 1 -h a ^ ¥ ^ a (put- 
ting ¥ f h i.y 
Then for that the Spa- 
ces 
