Round the centre, and following the inequalities of the ground, a second line of stakes is planted, this second circle being perhaps three or four hundred yards in diameter. Another trench is then dug in the same way, with bananas planted, as before, in the earthwork. The interval between the two lines of fortification is occupied by the troops. If the boma is only to be occupied for two or three days, this is all that is usually done to it; but if it is intended for a longer stay, a trench is dug outside the palisades. The object of using banana stalks in this manner is ingenious.
Within four or five hours they shrink, and on being withdrawn from the earth leave loopholes, through which the defenders can fire without exposing themselves. Little huts are built all over the interior of