Out from among the horsemen two gigantic black fellows advanced.

Neither one was Arab, though no doubt they spoke the tongue.

Their features were Negroid, of an East African type.
The dress they wore distinguished them from all the others.

They had neither _tarboosh_ nor burnous, but simply red fezes; tight sleeveless shirts of striped stuff, and trousers of Turkish cut.

Their feet were bare.
Strange enough figures they made, black as coal, muscled like Hercules, and towering well toward seven feet, with arms and hands in which the sinews stood out like living welts.