Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
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Transcription
Observation period /n Day
miles hours
0548-0740 = 21 1.9
0752-1013 = 32 2.6
1305-1615 = 36 3.2
1650-1950 = 26 2.2
Total = 115 10.1