He then commenced to maneuver to that end.
Very likely old Tom divined Dick Sand's thought.

A word, pronounced in a low voice, warned his companions to be attentive.

They did not stir, but they kept themselves ready to see, as well as to hear.
Soon, with an indifferent air, Dick Sand had gained fifty steps more.
From the place where he then was, he could have called out, in such a manner as to be heard, that name Kazounde, and tell them what the probable length of the journey would be.

But to complete his instructions, and confer with them on their conduct during the journey, would be still better.

He then continued to draw nearer to them.