Classicly

The moisture-bearing wind in this part of Africa is the fixed south-east trade, deflected, as in the great valley of the Mississippi and in the island of Ceylon, into a periodical south-west monsoon. As will appear in these pages, the downfalls begin earlier in Central Africa than upon the eastern coast, and from the latter point they travel by slow degrees, with the northing sun, to the north-east, till they find a grave upon the rocky slopes of the Himalayas.