Chapter 15 -IN THE ROBBERS' NEST.

For an hour the Comet had been toiling upward by a circuitous and intricate way. But he had not lost in speed. Billie had made up her mind not to linger. If they must see these men into a safe hiding place it was well to get it over with as soon as possible.

They had not been permitted to light the Comet's one illuminating eye, but had gone sile