540 Sir george shuckburgh’s Obfervations 
Feet. 
Thefe obfervations give for the length of the fide i 9 3, — 10691.9 
— — — • — 2, 3, — 10886.7 
Height of 3 above i, — — 4212.8 
3 above 2 > — — — — 4194.8 
2 above i, — — — «_ 17 
And confequently, 3 above 1 deduced from the obfervation at 2, — 42 1 2.0 
And laftly, the mean height of 3 above 1 from the determination at! 
each end of the bafe, — j 4212.4 
The difference in height, however, between the two 
barometers was only 421 1.3 feet. 
Here follow the barometrical obfervations and their 
reduction. . 
(0) Made between the hours of eight and twelve, in the open air and not in 
the tent, which could not be pitched on accout of the fmallnefs of the plain at 
the furamit; a briik fouth wind, but fair. The barometer was fereened by an 
umbrella. 
Com* 
