- AOR AN ACCOUNT OF: THE | 
Tu last. reduction is the only one which requires any explanation. 
‘The difference of level of the stations cf Zephyr Hall and Belville, was. 
found from the peak Surkunda to be..... 1922 fect,.. 
Lephyr Hall above Newada,..sscscecce. 492° 
Newada above Belville, .....sseceeeree6 1430: 
Newada above south extremity base’... 185 
: 1244 above Belyille. 
south extremity of base half difference,, Fre ba 2 
level of 2 extremity of base, sBelodioc ae (os aa 
Belville above level of the sea, .......-... 986 by Bar. obs.. 
Middle part’of base above Sea, ......... — 2303. 
From this with the radius of the spheriod ‘for lat. ; 30 be2(The 
Tatitude of the middle-point of the base)=20,903-416 feet, the above. 
cor rection has been | calculate ed by the usual formula. 
Be b= BX GA ts fe) 
where B means the measured base, . 
eo oe corrected, . 
h. The height above the level of the sea, 
# ‘The radius of the spheroid. 
Ir is evident that the first term + is sufficient fer practical purposes. 
