We passed near the base of the rounded masses Ngozo and Mekanga, and think, from a near inspection, that they are over 2000 feet above the plain, possibly 3000 feet, and nearly bare, with only the peculiar grassy plant on some parts which are not too perpendicular.

The people are said to have stores of grain on them, and on one the chief said there is water; he knows of no stone buildings of the olden time in the country.

We passed many masses of ferruginous conglomerate, and I noticed that most of the gneiss dips westwards.

The striae seem as if the rock had been partially molten: at times the strike is north and south, at others east and west; when we come to what may have been its surface, it is as if the striae had been stirred with a rod while soft.
We slept at a point of the Rovuma, above a cataract where a reach of comparatively still water, from 150 to 200 yards wide, allows a school of hippopotami to live: when the river becomes fordable in many places, as it is said to do in August and September, they must find it difficult to exist.
_15th June, 1866._--Another three hours' march brought us from the sleeping-place on the Rovuma to Metaba, the chief of which, Kinazombe, is an elderly man, with a cunning and severe cast of countenance, and a nose Assyrian in type; he has built a large reception house, in which a number of half-caste Arabs have taken up their abode.

A great many of the people have guns, and it is astonishing to see the number of slave-taming sticks abandoned along the road as the poor wretches gave in, and professed to have lost all hope of escape.