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Rh outlines. Up the straight four-mile channel from Limon Bay come many barges, towed either by sturdy sea-going tugs or an outlandish-looking, stern-wheel steamer called the Exotic. Some of these barges are laden with Portland cement from the United States, others with sand from the beaches of Nombre de Dios, or crushed stone



from the quarries of Porto Bello. (For both of these old Spanish ports are now alive again, helping in the building of the Canal, and every now and then one of our dredges strikes the hull of a sunken galleon, or brings up cannon-balls or pieces-of-eight.) The cargoes of all