the so-called Bay of
Rainbows separates itself from the abyss of the Sea of Showers, there
were found some stratified rocks in which the fascinated eyes of the
explorer beheld the clear imprint of a gigantic human foot, measuring
five feet in length from toe to heel.

Detailing the Marvellous Adventures of the Earth's Warriors in
Unknown Worlds.

The most minute search failed to reveal another trace of the presence
of the ancient giant, who had left the impress of his foot in the wet
sands of the beach here so many millions of years ago that even the
imagination of the geologists shrank from the task of attempting to fix
the precise period.

The Great Footprint.

Around this gigantic footprint gathered most of the scientific members
of the expedition, wearing their oddly shaped air-tight suits, connected
with telephonic wires, and the spectacle, but for the impressiveness of
the discovery, would have been laughable in the extreme. Bending over
the mark in the rock, nodding their heads together, pointing with their
awkwardly accoutred arms, they looked like an assemblage of antediluvian
monsters collected around their prey. Their disappointment over the
fact that no other marks of anything resembling human habitation could
be discovered was very great.

Still this footprint in itself was quite sufficient, as they all declared,
to settle the question of the former inhabitation of the moon, and it
would serve for the production of many a learned volume after their
return to the earth, even if no further discoveries should be made in
other parts of the lunar world.

Expeditions Over the Moon.

It was the hope of making such other discoveries that led to the dispatch
of the other various expeditions which I have already named. I had chosen
to accompany the car that was going to Aristarchus, because, as every one
who had viewed the moon from the earth was aware, there was something very
mysterious about that mountain. I knew that it was a crater nearly thirty
miles in diameter and very deep, although its floor was plainly visible.

The Glowing Mountains.

What rendered it remarkable was the fact that the floor and the walls of
the crater, particularly on the inner side, glowed with a marvellous
brightness which rendered them almost blinding when viewed with a
powerful telescope.

So bright were they, indeed, that the eye was unable to see many of the
details which the telescope would have made visible but