A series of submarine bottom samples was collected during the 1960-62 cruises by the research vessel ATLANTIS of the Woods Hole Oceanographic Institution. The samples represent a transect originating from the Gayhead slope, Massachusetts, south to the Bermuda Islands, and westward toward Cape Hatteras, North Carolina (see map). These cruises resulted in the recovery of 29 useful quantitative benthic samples. Eight of these, numbered Be 1 to Be 8, were taken off Bermuda in the spring of 1960. One came from the outer shelf south of New England, six others from the continental slope south of New England, five from the abyss north of the Gulf Stream, two in the Gulf Stream, and three in the Sargasso Sea. These are indicated by letters from C to MM and range in depths from 97 to 5001 meters. The single-lettered stations refer to continental slopes or shallower depths, and the double-lettered ones to depths of more than 2000 m. Three samples, numbered Slope 2, 3 and 4, are also from the continental slope. Three others were taken by the Woods Hole oceanographic research vessel, CHAIN, Cruise 35, in April 1963, from areas off northeastern South America, in latitudes 07° 09' S to 08° 45.5' N, and in depths of 520 to 1500 m. Eight samples were taken by the ATLANTIS, in 1947, from the Atlantic Ridge in abyssal depths, under the direction of the late Dr. Louis Hutchins; they are included as they contain some interesting deepwater forms not previously reported. The details of each are given in the Station Lists below.
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