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 channels which they cut here and there through the sandbeach ramparts into the sea.

The identification of places from aboard ship along such a coast as this is very difficult. Even good sized rivers doubling on themselves sneak out between sand banks, and make no obvious break in surf or forest wall. The old sailing direction that gave as a landmark the "Tree with two crows on it" is as helpful as any one could get of many places here, and when either the smoke season or the wet season is on of course you cannot get as good as that. But don't imagine that unless the navigator wants to call on business, he can "just put up his heels and blissfully think o' nowt," for this bit of the West Coast of Africa is one of the most trying in the world to work. Monotonous as it is ashore, it is exciting enough out to sea in the way of the rocks and shoals, and an added danger exists at the beginning and end of the wet, and the beginning of the dry, in the shape of tornadoes. These are sudden storms coming up usually with terrific violence; customarily from the S.E. and E., but sometimes towards the end of the season straight from S. More slave ships than enough have been lost along this bit of coast in their time, let alone decent Bristol Guineamen into the bargain, owing to "a delusion that occasionally seized inexperienced commanders that it was well to heave-to for a tornado, whereas a sailing ship's best chance lay in her heels." It was a good chance too, for owing to the short duration of this breed of hurricane and their terrific rain, there accompanies them no heavy sea,