"Perhaps you are referring to the little silver pyx for outgoing mail on the table in the lower hall."
"'Pyx,' is it!" The Sergeant's sarcasm was stupendous. "Well, go down and bring me everything that's in this here pyx.—No! Wait a minute—I'll keep you company. . . . Pyx!" He took Sproot by the arm and fairly dragged him from the room.
A few moments later he returned, crestfallen.
"Empty!" was his laconic announcement.
"But don't give up hope entirely just because your cabalistic diagram has disappeared," Vance exhorted him. "I doubt if it would have helped you much. This case isn't a rebus. It's a complex mathematical formula, filled with moduli, infinitesimals, quantics, faciends, derivatives, and coefficients. Rex himself might have solved it if he hadn't been shoved off the earth so soon." His eyes wandered over the room. "And I'm not at all sure he hadn't solved it."
Markham was growing impatient.
"We'd better go down to the drawing-room and wait for Doctor Doremus and the men from Headquarters," he suggested. "We can't learn anything here."
We went out into the hall, and as we passed Ada's door Heath threw it open and stood on the threshold surveying the room. The French doors leading to the balcony were slightly ajar, and the wind from the west was flapping their green chintz curtains. On the light beige rug were several damp discolored tracks leading round the foot of the bed to the hall-door where we stood. Heath studied the marks for a moment, and then drew the door shut again.
"They're footprints, all right," he remarked.
