584 Sir george shuckburgh’s Obfervations 
Obfervation below. 
Barometer. 
Therm. 
Therm. 
attached. 
detached. 
In. 
30.0820 
71.0 
68.0 
70.5 
Difference of the two attached therm. 
Obfervation at the top. 
Barometer. 
Therm. 
Therm. 
attached. 
detached. 
In. 
<? 
0 
„ „ , 29.9850 
7 °. 5 
76 .a 
Correct for o°.5 of heat, 4- .00 1 5 
68.0 
Take — - — 29.9865 
2)144.0(72.0 mean heat. 
From — — 30.082a 
31.2 ftandard temp, 
Remains the difference -j 
4-40.8 difference. 
or fall of quickfilyer in > 0.0955 
the barometer, — J 
The difference for at 30 inches z: 
86.7 feet. 
Correction for 41°. 
\ 
Feet. Ft. 
Feet. 
o r 80 — 8.0 
Therefore, for 0900 — . 
78.0 
41 on i 2.7= .3 
0050 — _ 
4-3 
— ■ . - . — 
0005 — — 
0.4 
41 0 on 82.7=8.3 
Therefore, 0955.111011 of quickfilyer, — 
Correction for4i° on 82.7 feet. 
82.7 the approximate height. 
+ 8.3 
Giv 
res 
— 9 1 .0 zz the true height. 
Now this was the height of the Tarpeian rock, or the 
weft-end of the Capitol-hill in Rome, above the con- 
vent of St. Clare, in the Strada dei fpeccbi. 
The preceding rules for determining heights above 
the furface of the earth will, I prefume, anfwer equally 
well. for meafuring depths below it. 
TABLE 
