I told him that I should have liked some of the Nassick boys to remain and teach this and other things, but they might be afraid to venture lest they should be sold again.

The men who listened never heard such decided protests against selling each other into slavery before! The idea of guilt probably floated but vaguely in their minds, but the loss of life we have witnessed (in the guilt of which the sellers as well as the buyers participate) comes home very forcibly to their minds.
Mataka has been an active hand in slave wars himself, though now he wishes to settle down in quiet.

The Waiyau generally are still the most active agents the slave-traders have.

The caravan leaders from Kilwa arrive at a Waiyau village, show the goods they have brought, are treated liberally by the elders, and told to wait and enjoy themselves, slaves enough to purchase all will be procured: then a foray is made against the Manganja, who have few or no guns.

The Waiyau who come against them are abundantly supplied with both by their coast guests.