Ninety-eight bottom samples were collected from Barataria Bay, on the margin of the Mississippi delta, in accordance with a predetermined grid pattern. Mechanical analyses were performed, and the several statistical constants of the samples computed. Maps were prepared showing the areal distribution of the samples in terms of their average size, and their "degree of sorting"; this distribution was related to the currents within the bay. In all, five main types of sedimentary curves were found, which displayed a regular variation in character from deeper to shallower parts of the bay.

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