baker.] GEOGRAPHIC COORDINATES. 27 
GEOGRAPHIC COORDINATES. 
The geographic positions of various camps and stations in the vicin- 
ity of the parallel were determined astronomically. Latitudes were 
determined with the zenith telescope; azimuth and time with the tran- 
sit. Longitudes were determined by chronometer, by moon-culminat- 
ing stars, and at one station, Camp Mooyie, by the solar eclipse of »I ulv 
7, 1860. 
It would seem that 28 fundamental or base stations were established 
near the boundary: For these stations measurements were made to 
the parallel. Thereupon other stations, with monuments, were estab- 
lished on the parallel. 1 Of these stations on the parallel there are 161. 
The description of these fundamental or base stations and of the 161 
stations on the parallel, their location, longitude, etc., arc given in 
Tables 1 to IV herewith. Tables I and III are made up from data on 
the photographic copies of the final map which were deposited in the 
General Land Office in 1866. Tables II and IV are copied from the 
British atlas in the State Department, which was presented by the Brit- 
ish minister, Sir Edward Thornton, in 1871. The results from the two 
sources are almost identical, but as they are not absolutely so, and as 
the originals are not conveniently accessible, it was deemed best to 
print, side by side, the results from these two sources. 
1 For method employed see Appendix A, pp. 64-C5. 
