[8] An announcement in the Cincinnati Commercial declares that the exploring party now at Darien have failed to find a practicable route at that point.—{May 11, 1870.}
[9] At this station the difference in the readings of the barometers was so great that the height was computed from the mean of the readings of each instrument separately. In other cases the united mean of both was used. The height given in the table was computed from the readings of the barometer which was used as a standard.
Transcriber's Notes:
The cover image was created by the transcriber, and is in the public domain.
Typographical errors have been silently corrected.
Inconsistent place names have been silently corrected.