three Degrees of iJie Msridian. 97 



purpose the following are the data furnished by Lieut. Col. 

 Mudge. 



Latitude of CHfton reduced to the centre of the station 

 53' 27' 36/'6{>. 



Azimuth ot Grin^lev, seen from Clifton, and reckoned 

 from the north toward the west, 256° 17' 2,1". 



Azimuth of Healherscdge, seen from Ciifton, and reck- 

 oned in the same direction, lib" 8' 8",81. 



With these d:Ua, and the two tables of spherical triangles, 

 and the.logarithms of their sides expressed in arcs, the in- 

 tervals between Clifton and the two stations Griugley and 

 Heathersedge were found in toises and in seconds of a 

 degree, as well as all the corrections to be made on the first 

 azimuths increased by ISO", as aziniuths of Clifton seea 

 on the horizon at these latter places. 



The saine process was continued for the following sta- 

 tions in succession, all the way to Dunnose in the Isle of 

 Wight, which is the southernmost extremity of the 

 series. 



In this manner we have the latitudes and azimuths of 

 each station, bv means of two or three precedinn stations, 

 and conse<]uenlly we have a verification of all the calcula- 

 tions that have been before made by Lieut. Col. Mudge. 



The results of my calculations are contained in the two 

 followincr tables. 



First Table of Distances in Toises and in 

 gree on the Meridian^ comprised hetu 

 Stations in the Series of Triangles. 



Names of ihe Stations. 



Clifton 



Healheracdge 



Orpit 



Casilerii'.g 



Corley 



Epwell 



Slow 



Whitehorse 



Highclcrc 



Dean Hill 



Dunnose 



,Sum total. ., 162057,313 7 



Arcs in Toises. 

 0,0 



6334,324 

 15818,489 

 10801,1934 

 14295,384 

 22327, OOS 



9555,479 

 18799,645 

 14990,567 

 16103,614 

 23529,886 



Seconds of a De- 

 een the luesterhj 



Arcs in Seconds. 

 0,0 



430,9923 



997,5928 

 1248,8226 



901,6207 

 1408,2543 



602,7284 

 1185,8656 



945,6354 

 1016,0180 

 1484,4531 



10221, 9S3f 



Second, 



