The lenses were arranged so that the path of the great ray should run down alongside of the shaft and but a few feet from it. The screen was set up as it had been in the other building, and everything was made ready for the operations of the photic borer.
The address which Roland Clewe now delivered to the company was made as brief and as much to the point as possible. The description of the Artesian ray was listened to with the deepest interest and with a vast amount of unexpressed incredulity. What he subsequently said regarding his automatic shell and its accidental descent through fourteen miles of the earth's crust, excited more interest and more incredulity, not entirely unexpressed. Clewe was well known as a man of science, an inventor, an electrician of rare ability, and a person of serious purpose and strict probity, but it was possible for a man of great attainments and of the highest moral character to become a little twisted in his intellect.
When at last the speaker told of his descent into the shaft; of his passage fourteen miles into the interior of the earth; of his discoveries, on which he based his theory that the centre of our globe is one vast diamond, there was a general laugh from the reporters' quarter, and the men of science began to move uneasily in their seats and to talk to each other. Professor Tippengray, her silver hair brushed smoothly back from her pale countenance, sat looking at the speaker through her gold spectacles, as if the rays from her bright eyes would penetrate into the very recesses of his soul. Not an atom of doubt was in her mind; she never doubted, she believed or she disbelieved. At present she believed; she had come there to do that, and she would wait, and when the proper time had come to disbelieve she would do so.
If there had been any disposition in the audience to considerately leave the man of shattered intellect to the care of his friends, it disappeared when Clewe said that he would now be glad to show to all present the workings of the Artesian ray. Crazy as he might be, they wanted to wait and see what he had done. The workmen who had charge of the machinery were on hand, and in a few moments a circle of light was glowing on the ground within the screen. Clewe now announced that he would take those present, one at a time, inside the enclosure and show them how light could be made to penetrate miles downward into the solid earth and rock.
Professor Tippengray was the first one invited to step within the screen. Clewe stood at the entrance ready to explain or to hand her the necessary telescopes; and as the portion of her body which remained visible was between him and the light, there was nothing to disturb his nerves.
The lenses were so set that they could penetrate almost instantly to the depth which had previously been reached, but Clewe made his ray move downward somewhat slowly; he did not wish, especially to the first observer, to show everything at once.
As she beheld at her feet a great lighted well, extending downward beyond the reach of her sharp eyes, Professor Tippengray stepped back with a scream which caused nearly everybody in the audience to start to his feet. Clewe expected this. He raised his hand to the company, asking them to keep still; then he handed Professor Tippengray a stick.
“Take this,” he said, “and strike that disk of light; you will find it as solid ground as that you stand on.” She did so.
“It is solid!” she gasped; “but where is the end of the stick?”
He turned off the light; there was the end of the stick, and there was the little patch of sandy gravel, which he stepped upon, stamping heavily as he did so. He then retired outside the screen. Professor Tippengray turned to the audience.