306
SOUTH AND EAST AFRICA.
as is evident from the relief of the hills, which is much greater on the eastern or outer than on the inner side. neh 7,
In the Mrima, or coast region below the Pangani Falls, the Rufiji is navigable for the rest of its course seawards, a distance altogether of about 120 miles. But
Fig. 91. — The Rufiji delta.
great care and skill are required to avoid the sand or mudbanks, which are formed or shifted with every recurring inundation. In this part of its course the river has even excavated a new channel, which winds to the south of a now abandoned branch. Lower down, in the delta proper, these branches are constantly being
