31/56 Below Sinamane's the banks are often worn down fifty feet, and composed of shingle and gravel of igneous rocks, sometimes set in a ferruginous matrix. The bottom is all gravel and shingle, how formed we cannot imagine, unless in pot-holes in the deep fissure above. The bottom above the Falls, save a few rocks close by them, is generally sandy or of soft tufa. Every damp spot is covered with maize, pumpkins, water-melons, tobacco, and hemp. There is a pretty numerous Batoka population on both sides of the river. |