"What the N-ray is in living organisms, we must call, for lack of a better term, the subaura in the phantom."
They bent over the photograph together. Presently the Tracer said: "She is very, very beautiful?"
Harren's dry lips unclosed, but he uttered no sound.
"She is beautiful, is she not?" repeated the Tracer, turning to look at the young man.
"Can you not see she is?" he asked impatiently.
"No," said the Tracer.
Harren stared at him.
"Captain Harren," continued the Tracer, "I can see nothing upon this bit of paper that resembles in the remotest degree a human face or figure."
Harren turned white.
"Not that I doubt that you can see it," pursued the Tracer calmly. "I simply repeat that I see absolutely nothing on this paper except a part of a curtain, a window pane, and—and—"