Image from the Biodiversity Heritage Library.
Contributed by American Museum of Natural History Library.
| www.biodiversitylibrary.org
Transcription
So convert-long into time
50°40'15" W. Long
50
60)200(3h
180
20m
40
60)160|2m
120
40s
15
60)60|1 s
Ans 3hrs 22m 41 secs
----
101°30' W. Long
101
60)404(6h
360
44m
30'
60)120(2m
120
Ans 6hrs 46min