“Hydrographic Notices, Pacific Ocean,” 1856 to 1873 (p. 106).
The hydrographic feature of greatest importance is the Humboldt Current.
A hydrographic sheet is prepared on which all the points are plotted which will be useful.
From 1866 to 1879 it was the hydrographic office of the Navy Department.
The originals of these surveys form part of the most precious possessions of ...