the cavalcade set forth without further delay in the direction of the hillocks that were now in plain view a mile or two away.

As they neared them Tarzan saw what ap­peared to be literally innumerable little men mov­ing about among the hillocks, and as he came nearer still he realized that these seeming hillocks were symmetrical mounds of small stones quite evidently built by the pygmies themselves and that the hordes of pygmies moving about among them were workers, for here was a long line all moving in one direction, emerging from a hole in the ground and following a well-defined path to a half completed hillock that was evidently in course of construction. Another line moved, empty-handed, in the opposite direction, entering the ground through a second hole, and upon the flanks of each line and at frequent intervals, marched armed warriors, while other similar lines of guarded workers moved in and out of openings in each of the other domelike structures, carrying to the mind of the ape-man a suggestion of ants laboring about their hills.