Gradually, as the shutters were closed, the room grew dark, and the faces of Judge, Jury and the anxious-looking parties within the bar grew weird and wan among the shadows. A strange silence and awe descended upon the crowd. The great sun in heaven was summoned as a witness, and the sun would not lie. A voice was to speak to them from a hundred millions of miles away—a hundred millions of miles near the realm toward which men looked when they dreamed of the Great White Throne.

They felt as a man might feel, were he conscious, in the darkness of the tomb, when waiting for the trump of the resurrection and the breaking of the everlasting day. Men heard their own hearts beat, like the tramp of trooping hosts; yet there was one man who was glad of the darkness. To him the judgment day had come; and the closing shutters were the rocks that covered him. He could see and not be seen. He could behold his own shame and not be conscious that five hundred eyes were upon him.

All attention was turned to the single pair of shutters not entirely closed. Outside of these, the professor had established his heliostat, and then gradually, by the aid of drapery, he narrowed down the entrance of light to a little aperture where a single silver bar entered and pierced the darkness like a spear. Then this was closed by the insertion of his microscope, and, leaving his apparatus in the hands of an assistant, he felt his way back to his old position.

"May it please the Court, I am ready for the experiment," he said.

"The witness will proceed," said the judge.

"There will soon appear upon the wall, above the heads of the Jury," said Prof. Timms, "the genuine signature of Nicholas Johnson, as it has been photographed from the autograph letter. I wish the Judge and Jury to notice two things in this signature—the cleanly-cut edges of the letters, and the two lines of indentation produced by the two prongs of the pen, in its down-stroke. They will also notice that, in the up-stroke of the pen, there is no evidence of indentation whatever. At the point where the up-stroke begins, and the down-stroke ends, the lines of indentation will come together and cease."

As he spoke the last word, the name swept through the darkness over an unseen track, and appeared upon the wall, within a halo of amber light. All eyes saw it, and all found the characteristics that had been predicted. The professor said not a word. There was not a whisper in the room. When a long minute had passed, the light was shut off.

"Now," said the professor, "I will show you in the same place, the name of Nicholas Johnson, as it has been photographed from the signatures to the assignment. What I wish you to notice particularly in this signature is, first, the rough and irregular edges of the lines which constitute the letters. They will be so much magnified as to present very much the appearance of a Virginia fence. Second, another peculiarity which ought to be shown in the experiment—one which has a decided bearing upon the character of the signature. If the light continues strong, you will be able to detect it. The lines of indentation made by the two prongs of the pen will be evident, as in the real signature. I shall be disappointed if there do not also appear a third line, formed by the pencil which originally traced the letters, and this line will not only accompany, in an irregular way, crossing from side to side, the two indentations of the down-strokes of the pen, but it will accompany irregularly the hair-lines. I speak of this latter peculiarity with some doubt, as the instrument I use is not the best which science now has at its command for this purpose, though competent under perfect conditions."

He paused, and then the forged signatures appeared upon the wall. There was a universal burst of admiration, and then all grew still—as if those who had given way to their feelings were suddenly stricken with the consciousness that they were witnessing a drama in which divine forces were playing a part. There were the ragged, jagged edges of the letters; there was the supplementary line, traceable in every part of them. There was man's lie—revealed, defined, convicted by God's truth!

The letters lingered, and the room seemed almost sensibly to sink in the awful silence. Then the stillness was broken by a deep voice. What lips it came from, no one knew, for all the borders of the room were as dark as night. It seemed, as it echoed from side to side, to come from every part of the house: "Mene, mene, tekel upharsin!" Such was the effect of these words upon the eager and excited, yet thoroughly solemnized crowd, that when the shutters were thrown open, they would hardly have been surprised to see the bar covered with golden goblets and bowls of wassail, surrounded by lordly revellers and half-nude women, with the stricken Belshazzar at the head of the feast. Certainly Belshazzar, on his night of doom, could hardly have presented a more pitiful front than Robert Belcher, as all eyes were turned upon him. His face was haggard, his chin had dropped upon his breast, and he reclined in his chair like one on whom the plague had laid its withering hand.