Chart of the currents off the Cape of Good Hope to accompany Captn. Toynbee's paper "On the specific gravity temperature & currents of the sea," the result of a portion of five consecutive yearly voyages from England to India

Includes explanatory note: "The Blue contour lines represent the limits of the cold (or ice bearing current) from 40° to 50° of temperature, _the Red contour lines, those of the warm current (or that derived from tropical regions) from 60° & upwards. The figures thus (59·5) denote the temperature of the surface (as observed) in precisely the same manner, as the soundings represent the depth of water on any ordinary chart. The direction of the currents is indicated by the flight of the Arrow_ near the barb of which is marked its velocity &c. Each date is underlined with the same colour as the track to which it belongs. The Chart represents the temperatures & currents during the months of August & September, about the parallel of 40°_ but near & round the Cape, during the month of February." Captain Toynbee's tracks of 1860-1, 1861-2, 1862-3, 1863-4, and summer 1864 are shown. Depth (Agulhas Bank) shown by shading. From: The Journal of the Royal Geographical Society of London. Vol. 35, (1865), pp. 147-53; held in Firestone Library. Call number: G7 .J687 v.35 1865
London : published for the Journal of the Royal Geographical Society by J. Murray, Albemarle Street, 1865.
South Atlantic Ocean and Indian Ocean
Ocean currents—Indian Ocean, Ocean currents—Sout Atlantic Ocean, Ocean temperature—South Atlantic Ocean, Ocean temperature—Indian Ocean—Maps, Specific gravity, Geophysics, South Atlantic Ocean—Maps, South Atlantic Coast (South Africa)—Maps, and Cape of Good Hope (South Africa)—Maps
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