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Transcription
80° 55' [illegible]
81, 18' Cape Town Table
No observations earlier 7th 21
Example.
Double altitude of Sun = 12° 36'
index correction = + 0-3'
divide by 2 t 2) 12 39'
observed altitude = 6° 19' 30"
Semidiameter tables + 16
6° 35.30
Refraction - 9
Subtract for Zenith distance 6-24,30
=81-24.30
Declination + 6-23,41
89,48,11.