Nobody can find a lost heroine in the scrub but the aboriginal "tracker," and he will not lend himself to the scheme if it will interfere with the novelist's plot.

The scrub stretches miles and miles in all directions, and looks like a level roof of bush-tops without a break or a crack in it -- as seamless as a blanket, to all appearance.

One might as well walk under water and hope to guess out a route and stick to it, I should think.

Yet it is claimed that the aboriginal "tracker" was able to hunt out people lost in the scrub.

Also in the "bush"; also in the desert; and even follow them over patches of bare rocks and over alluvial ground which had to all appearance been washed clear of footprints.
From reading Australian books and talking with the people, I became convinced that the aboriginal tracker's performances evince a craft, a penetration, a luminous sagacity, and a minuteness and accuracy of observation in the matter of detective-work not found in nearly so remarkable a degree in any other people, white or colored.