49 2 An Account of the Measurement 
Burmese, with its amplitude, ( i° 13' 1 9", 69) be used in finding the 
meridional distance of the whole arc, (its corresponding ampli- 
tude,) we shall get 2 0 50' 1 i",8o for its subtense; which argues a 
deflection from the vertical at Clifton = 1 i",79* If the meridional 
distance between Dunnose and Greenwich be used, we shall, 
from the same mode of proceeding, make it = 10", 3. In short, 
the general tenor of the observations seems to prove, that the 
plumb-line of the sector has been drawn towards the south at 
all the stations ; and that by attractive forces, which increase as 
we proceed northward. On a further prosecution of this Survey, 
the zenith sector will be taken forward in that direction, which 
will afford an opportunity of throwing further light on this 
interesting subject. But meridional operations carried on in in- 
sular countries, are not so likely to afford just conclusions with 
regard to the different lengths of the degrees, as the same 
operations conducted in places very remote from deep seas. 
From the late operations of the French Academicians it 
appears, that the meridional distance between Dunkirk and 
Barcelona is 275792,36 modules, the metre being 443,296 lines 
of the Peru toise = 0,256537th part of the module, at the tem- 
perature of melting ice. This meridional distance, therefore, 
converted into English feet, is 3527921. The distance between 
Dunkirk and Paris is 133758 feet, and the distance between 
Paris and Greenwich — 963954 feet; therefore, 830196 feet 
is the distance between Greenwich and Dunkirk. The distance 
between Greenwich and Clifton is 722641 feet; hence, 4411968 
feet is the meridional distance between Clifton and Barcelona. 
The latitude of Barcelona is 41 0 21' 48", 8; the latitude of 
Greenwich is 51 0 28' 40''; and if to this latitude we add i° 58' 
51", 59, the arc between Clifton and Greenwich, we shall get 
