Computation of D’s True Central Altitude. 
November 10th, 1899, at 7h. 3 m. 23 secs, p.m., in Latitude 8° 48' S., approximate Longitude 
31° 6' E., the distance between the sun and the moon was observed. The altitude of the moon was 
too great to be observed in an Artificial Horizon, it had therefore to be computed. The error of 
the watch on local mean time was 2 m. 8 secs. slow. Thermometer, 73° Eahr. Barometer, 
observations for time and longitude, 
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