He went carefully about his work, and she saw him replacing four of the tubes with others, new ones, which were ready at hand. Though it was the body of Ramsey Burr, the movements were different from the slow, precise work of the professor, and more and more, she realized that her son inhabited the shell before her.
For a moment, the mother thought of attempting to dissuade her son from making the final change; was it not better thus, than to chance the disintegration of the bodies? Suppose something went wrong, and the exchange did not take place, and her son, that is, his spirit, went back to the death house?
Midnight struck as he worked feverishly at the apparatus, the long face corrugated as he checked the dials and tubes. He worked swiftly, but evidently was following a procedure which he had committed to memory, for he was forced to pause often to make sure of himself.
"Everything is O. K.," said the strange voice at last. He consulted his watch. "Twelve-thirty," he said.
She bit her lip in terror, as he cried, "Now!" and sprang to the table to take his place on the metallic platform, which oscillated to and fro under his weight. The delicate grayish metal antenna, which, she knew, would form a glittering halo of blue and gray threads of fire, rested quiescent above his head.
"This is the last thing," he said calmly, as he reached for the big ebony handled switch. "I'll be myself in a few minutes, mother."
"Yes, son, yes."
The switch connected, and Allen Baker, in the form of Ramsey Burr, suddenly cried out in pain. His mother leaped up to run to his side, but he waved her away. She stood, wringing her hands, as he began to twist and turn, as though torn by some invisible force. Eery screams came from the throat of the man on the platform, and Mrs. Baker's cries of sympathy mingled with them.
The mighty motors hummed in a high-pitched, unnatural whine, and suddenly Mrs. Baker saw the tortured face before her grow dim. The countenance of the professor seemed to melt, and then there came a dull, muffled thud, a burst of white-blue flame, the odor of burning rubber and the tinkle of broken glass.