‘Hiwaiava Mountains. o6L 
Tar seconds and their logarithms, also the logarithm of the arcs in 
feet being given, render the table, much more convenient in use. 
TABLE 6. 
Tuis table requires no explanation. 
TABLE ve 
Contains the oe es correction of latitude, it’s use is evident. 
TABL E a 
Deen We logarithmic factor, for finding the difference of latitude 
of the two ends of a perpendicular arc. 
EXAMPLE. 
GiveEN the length of an arc Berpendicues to the meridian = 400,000 
feet, and the latitude of one end 30 53 00. Required the latitude: of 
the other end? 
Log. of 400,000 5:6020 
ee a 
Squared, 1-2040 
Log. from table 30 52 Gy luke 0-1483 
23-5 = 13523 
30 53 00 
eS 
30 52 37-5. - Latitude required. 
