TOTAL ECLIPSE OF THE SUN, JANUARY 22 , 1898. 
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sun’s centre was 5° 20' S., so that the direct image was oriented as shown in fig. 1, 
which also shows the points of 2nd and 3rd contact. 
Fig. 1. Orientation of Sim’s Disc at Mid-eclipse. 
In connection with the instruments using the light from ccelostat mirrors, it was 
further necessary to calculate the sun’s amplitude at the time of rising. This was 
found to he 20'’ 31' south of east. 
Time Arrmigements. 
The general time signals were given by a bugler under Captain Batten’s orders. 
The chronometer was in charge of Lieutenant de Wet, B.N. 
One of the ship’s chronometers was fortunately available for use on shore on the 
day of eclipse, but previously watches were frequently corrected by means of signals 
sent by Lieutenant Quavle from tlie ship. 
The special signals during totality were given every 10 seconds, beginning at 127 
—the assumed period of totality—by means of the eclipse clock (which was started 
at the signal “ Go ” by cutting a thread, thereby releasing the pendulum), by two 
timekeepers, one during the first half the other during the second half of totality. 
In the system adopted not only was the time left called out every tenth second, 
but other signals were interpolated to guide the work in the photographic huts. In 
