The mighty power of the water here seen gave us an idea of what is going on in thousands of cataracts in the world.

All the information we had been able to obtain from our Portuguese friends amounted to this, that some three or four detached rocks jutted out of the river in Kebrabasa, which, though dangerous to the cumbersome native canoes, could be easily passed by a steamer, and that if one or two of these obstructions were blasted away with gunpowder, no difficulty would hereafter be experienced.

After we had painfully explored seven or eight miles of the rapid, we returned to the vessel satisfied that much greater labour was requisite for the mere examination of the cataracts than our friends supposed necessary to remove them; we therefore went down the river for fresh supplies, and made preparation for a more serious survey of this region.
The steamer having returned from the bar, we set out on the 22nd of November to examine the rapids of Kebrabasa.

We reached the foot of the hills again, late in the afternoon of the 24th, and anchored in the stream.

Canoe-men never sleep on the river, but always spend the night on shore.