The Doctor's canoe came next, and seemed to be drifting broadside into the open vortex, in spite of the utmost exertions of the paddlers.

The rest were expecting to have to pull to the rescue; the men saying, "Look where these people are going!--look, look!"-- when a loud crash burst on our ears.

Dr.Kirk's canoe was dashed on a projection of the perpendicular rocks, by a sudden and mysterious boiling up of the river, which occurs at irregular intervals.

Dr.Kirk was seen resisting the sucking-down action of the water, which must have been fifteen fathoms deep, and raising himself by his arms on to the ledge, while his steersman, holding on to the same rocks, saved the canoe; but nearly all its contents were swept away down the stream.

Dr.Livingstone's canoe, meanwhile, which had distracted the men's attention, was saved by the cavity in the whirlpool filling up as the frightful eddy was reached.