Some thirty steps the way descended, ending in a straight and very narrow passage. The air, though somewhat chill, was absolutely dry and perfectly respirable, thanks to the enormously massive foundation of solid concrete which formed practically one solid monolith six hundred feet long by two hundred and fifty broad--a monolith molded about the crypt and absolutely protecting it from every outside influence.
"Not even the Great Pyramid of Ghizeh could afford a more perfect--hello, what's this?"
Allan stopped short, staring downward at the floor. His voice reechoed strangely in the restricted space.
"A skeleton, so help me!"
True indeed. At one side of the passage, lying in a position that strongly suggested death in a crouching, despairing attitude--death by starvation rather than by violence--a little clutter of human bones gleamed white under the torch-flare.
"A skeleton--the first one of our vanished race we've ever found!" exclaimed the man. "All the remains in New York, you remember, down in the subway or in any of the buildings, were invariably little piles of impalpable dust mixed with coins and bits of rusted metal. But this--it's absolutely intact!"
"The dry air and all--" suggested Beatrice.
Stern nodded.
"Yes," he answered. "Intact, so far. But--"
He stirred the skull with his foot. Instantly it vanished into powder.
"Just as I thought," said he. "No chance to give a decent burial to this or any other human remains we may come across here. The slightest disturbance totally disintegrates them. But with this it's different!"
He picked up a revolver, hardly rusted at all, that lay near at hand.
"Cartridges; look!" cried Beatrice, pointing.
"That's so, too--a score or more!"
Lying in an irregular oval that plainly told of a vanished cartridge-belt, a string of cartridges trailed on the concrete floor.
"H-m-m-m! Just for an experiment, let's see!" murmured the engineer.
Already he had slipped in a charge.
"Steady, Beatrice!" he cautioned, and, pointing down the passage, pulled trigger.
Flame stabbed the half-dark and the crashing detonation rang in their ears.
"What do you think of that?" cried Stern exultantly. "Talk about your miracles! A thousand years and--"
Beatrice grasped him by the arm and pointed downward. Astonished, he stared. The rest of the skeleton had vanished. In its place now only a few handfuls of dust lay on the floor.
"Well, I'll be--" the man exclaimed. "Even that does the trick, eh? H-m! It would be a joke, now, wouldn't it, if the records should act the same way? Come on, Beta; this is all very interesting, but it isn't getting us anywhere. We've got to be at work!"
He pocketed the new-found gun and cartridges and once more, torch on high, started down the passage, with the girl at his side.