[ .”3 ] 
G, the zenith dlftance of the obje< 5 t, the comple- 
ment of which to 90° is its altitude ; hence the great- 
eft or meridian altitude may be found, from which 
the latitude of the place may be deduced in the ufual 
manner. 
VoL(* LXI. 
Q 
XV. Epert- 
