The height opposite extends a few miles further west, and then branches off in a northerly direction.

A few small pieces of coal were picked up on the sandbanks, showing that this useful mineral exists on the Rovuma, or on some of its tributaries: the natives know that it will burn.

At the lakelet Chidia, we noticed the same sandstone rock, with fossil wood on it, which we have on the Zambesi, and knew to be a sure evidence of coal beneath.

We mentioned this at the time to Captain Gardner, and our finding coal now seemed a verification of what we then said; the coal-field probably extends from the Zambesi to the Rovuma, if not beyond it.

Some of the rocks lower down have the permanent water-line three feet above the present height of the water.
A few miles west of the Makoa of Matingula, we came again among the Makonde, but now of good repute.