An early example of a microscopic examination of ocean bottom sediment

An early example of a microscopic examination of ocean bottom sediment. This was published with a report by Lt. Joseph Dayman, RN, who ran a line of sounding s across the Atlantic Ocean from Newfoundland to Ireland on HMS CYCLOPS in 1857. This was the second line run and covered the same ground sounded by Lt. Otway Berryman for the USCS on the ARCTIC in 1856.

Photo Category: Exploration - Maps