CHAPTER III

Faithfully, phonographically even, Hatch repeated to The Thinking Machine the conversation he had had with Doctor Walpole, indicating on the person of the eminent scientist the exact spot of the wound as Doctor Walpole had indicated it to him. The scientist listened without comment to the recital, casually studying meanwhile the three crimson drops on the glass.

"Every step I take forward is a step backward," the reporter declared in conclusion with a helpless grin. "Instead of showing that Dick Herbert might not have stolen the plate I am proving conclusively that he was the thief—nailing it to him so hard that he can't possibly get out of it." He was silent a moment. "If I keep on long enough," he added glumly, "I'll hang him."

The Thinking Machine squinted at him aggressively.

"You still don't believe him guilty?" he asked.

"Why, I—I—I——" Hatch burst out savagely. "Damn it, I don't know what I believe," he tapered off. "It's absolutely impossible!"

"Nothing is impossible, Mr. Hatch," snapped The Thinking Machine irritably. "The worst a problem can be is difficult, but all problems can be solved as inevitably as that two and two make four—not sometimes, but all the time. Please don't say things are impossible. It annoys me exceedingly."

Hatch stared at his distinguished friend and smiled whimsically. He was also annoyed exceedingly on his own private, individual account—the annoyance that comes from irresistibly butting into immovable facts.

"Doctor Walpole's statement," The Thinking Machine went on after a moment, "makes this particular problem ludicrously simple. Two points alone show conclusively that Mr. Herbert was not the man in the automobile. I shall reach the third myself."

Hatch didn't say anything. The English language is singularly inadequate at times, and if he had spoken he would have had to invent a phraseology to convey even a faint glimmer of what he really thought.