Carey said nothing, but walked forward with his load, hearing the savages, who were chattering loudly, suddenly cease as if listening, and the next moment Black Jack came bounding to their side, looking eagerly from one to the other. "Why can't you walk?" growled Bostock. "Can't you get over the deck, and not come hopping like a hingy-rubber ball, or one of your kangaroos?" "Kangaroo?