Abstract: A drying tower for seed cotton in ginneries, which tower comprises four walls and a heated air flow from its bottom to its top. Seed cotton is fed at the top and collected at the bottom of the tower. The cotton is transferred over two sets of horizontal conveyors. The conveyors of one set are arranged in superimposed, spaced relationship along one wall, and the conveyors of the other set along an opposite wall of the tower, so that the centerally portions of the conveyors of one set overlap corresponding portions of the other set. The conveyors of the two sets are driven in opposite directions, thus causing the processed cotton to travel along a tortuous path during which it becomes dried.