Second map of an oceanic basin. Matthew Fontaine Maury produced this map
in 1854 and published it in the Wind and Current Charts for that year. This
map had significantly more data than the 1853 map including soundings by
Lt. Otway Berryman, USN, on the USS DOLPHIN over the Mid-Atlantic
Ridge (MAR) north of the Azores. These were the first soundings on the MAR.
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