But the eyes of the explorers kept coming back to the fearsome face of the conqueror. From the brows down, he was simply a huge, brutal giant; above his eyes, he was an intellectual. The combination was absolutely frightful; the beast looked capable of anything, of overcoming any obstacle, mental or physical, internal or external, in order to assert his apparently enormous will. He could control himself or dominate others with equal ease and assurance.

"It can't be that he was drawn from life," said the doctor, with an effort. It wasn't easy to criticize that figure, lifeless though it was. "On a planet like this, with such slight gravitation, there is no need for such huge strength. The typical Mercurian should be tall and flimsy in build, rather than short and compact."

But the geologist differed. "We want to remember that the earth has no standard type. Think what a difference there is between the mosquito and the elephant, the snake and the spider! One would suppose that they had been developed under totally different planetary conditions, instead of all right on the same globe.

"No; I think this monster may have been genuine." And with that the geologist turned to examine the other statuary.

Without exception, it resembled the central group; all the figures were neckless, and all much more heavily built than any people on earth. There were several female figures; they had the same general build, and in every case were so placed as to enhance the glory of the males. In one group the woman was offering up food and drink to a resting worker; in another she was being carried off, struggling, in the arms of a fairly good-looking warrior.

Dr. Kinney led the way into the building. As in the other structure, there was no door. The space seemed to be but one story in height, although that had the effect of a cathedral. The whole of the ceiling, irregularly arched in a curious, pointed manner, was ornamented with grotesque figures; while the walls were also partially formed of squat, semi-human statues, set upon huge, triangular shafts. In the spaces between these outlandish pilasters there had once been some sort of decorations, A great many photos were taken here.

As for the floor, it was divided in all directions by low walls. About five and a half feet in height, these walls separated the great room into perhaps a hundred triangular compartments, each about the size of an ordinary living room. Broad openings, about five feet square, provided free access from one compartment to any other. The men from the earth, by standing on tiptoes, could see over and beyond this system.

"Wonder if these walls were supposed to cut off the view?" speculated the doctor. "I mean, do you suppose that the Mercurians were such short people as that?" His question had to go unanswered.

They stepped into the nearest compartment, and were on the point of pronouncing it bare, when Jackson, with an exclamation, excitedly brushed away some of the dust and showed that the presumably solid walls were really chests of drawers. Shallow things of that peculiar metal, these drawers numbered several hundred to the compartment. In the whole building there must have been millions.

Once more the dust was carefully removed, revealing a layer of those curious rolls or reels, exactly similar to what had been found in the tool chest in the shell works. A careful examination of the metallic tape showed nothing whatever to the naked eye, although the doctor fancied that he made out some strange characters on the little boxes themselves.