Title given by cataloger. Figure 2 shows path along lowest points of seafloor. Figure three shows course and direction of actual currents. Depth shown by isobaths and shading. Lines of connecting dams [submarine plateaus] under water are shown. From: Journal of the Royal Geographical Society of London. Vol. 45 (1875), pp. 34-45; held in Firestone Library. Call number: G7 .J687