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(Left to right) Philip E. Jackson, Arthur Eugene Maxwell and Richard E. Blumberg on aboard R/V Spencer F. Baird (ship) while on the Capricorn Expedition (1952-1953). They are shown here lowering the heat probe which records temperatures at various depths of the bottom sediments. The heat probe was used for the first successful heat flow measurements of the seafloor during the Expedition. 1952.

(Left to right) Philip E. Jackson, Arthur Eugene Maxwell and Richard E. Blumberg on aboard R/V Spencer F. Baird (ship) whi...