a problem comes to me I shall not take eighteen months to solve it. I will not take a week."
In spite of himself Dr. Reiland's lips curled at this arrogant assertion. "It may be so," he said. "I have seen, Trant, how the work of the German, Swiss and American investigators, and the delicate experiments in the psychological laboratory which make visible and record the secrets of men's minds, have fired your imagination. It may be that the murderer would be as little, or even less, able to conceal his guilt than the sophomores we test are to hide their knowledge of the sentences we have had previously read to them. But I myself am too old a man to try such new things; and you will not meet here any such problems," he motioned to the quiet campus with its skeleton trees and white-frosted grass plots. "But why," he demanded suddenly in a startled tone, "is a delicate girl like Margaret Lawrie running across the campus at seven o'clock on this chilly morning without either hat or jacket?"
The girl who was speeding toward them along an intersecting walk, had plainly caught up as she left her home the first thing handy—a shawl—which she clutched about her shoulders. On her forehead, very white under the mass of her dark hair, in her wide gray eyes and in the tense lines of her straight mouth and rounded chin, Trant read at once the nervous anxiety of a highly-strung woman.
"Professor Reiland," she demanded, in a quick voice, "do you know where my father is?"
"My dear Margaret," the old man took her hand,
