in the length of the pendulum vibrating seconds . 303 
Dunnose . 
9th May, 1819, measured a Base of 1140 feet on Shanklin 
Down, and observed the following readings on the azimuth 
circle. 
At the North end of the Base. 
Objects. 
Readings of the 
Verniers. 
Mean. 
Summer house chimney. 
0 / u 
0.42.15 
42.50 V 
42.50 J 
0 / // 
0.42.38 
South end of base, - 
ic6.11.20 "I 
n. 5 f 
11. 5 J 
106. 1 1. 10 
Top of the Signal Post, 
210.15.40 'l 
16.20 > 
15-35 J 
210.15.52 
Dunnose Station, ... 
2 35 - 5 0 - i ° ] 
5 1 - 0 f 
50.30 J 
235 - 50.33 
At the South end of the Base. 
Sir Richard Worsleys’s Obelisk, 
Dunnose Station, 
Top of the Signal Post, 
North end of base. 
Summer House chimney. 
ZS-3S \ 
2 5-35 J 
57**9-55 I 
1950 9 
*9-45 J 
57.56.20 "I 
5 6 - 5 f 
56. o J 
6541. o 1 
40.40 V 
40-35 J 
125. 3.25 'I 
3- 2 5 V 
3-25 J 
0 - 25-37 
57.19.50 
57-56. 8 
65.40.45 
125. 3.25 
