A moment later sounds of hoofs on the hard road interrupted us and Ritter Smith dashed up.
"Just overtook a farmer down the road," he panted. "Says he saw an automobile waiting at the stone bridge and later it passed him with a girl and a man in it. He couldn't recognize them. The top was up and they went so fast."
Together we retraced the way to the stone bridge. Sure enough, there on the side of the road were marks where a car had pulled up. The grass about was trampled and as we searched Kennedy reached down and picked up something white. At least it had been white. But now it was spotted with fresh blood, as though someone had tried to stop a nose-bleed.
He looked at it more closely. In the corner was embroidered a little "G."
Evidently there had been a struggle and a car had whizzed off. Gloria was gone. But with whom? Had the message which we had seen her read at the start been from Du Mond? Was the plan to elope and so avoid his wife? Then why the struggle?
Absolutely nothing more developed from the search. An alarm was at once sent out and the police all over the country notified. There was nothing to do now but wait. Mrs. Brackett was frantic. But it was not now the scandal that worried her. It was Gloria's safety.
That night, in the laboratory, Kennedy took the handkerchief and with the blood on it made a most peculiar test before a strange-looking little instrument.
It seemed to consist of a little cylinder of glass immersed in water kept at the temperature of the body. Between two minute wire pincers or serres, in the cylinder, was a very small piece of some tissue. To the lower serre was attached a thread. The upper one was attached to a sort of lever ending in a pen that moved over a ruled card.
"Every emotion," remarked Kennedy as he watched the movement of the pen in fine zigzag lines over the card, "produces its physiological effect. Fear, rage, pain, hunger are primitive experiences, the most powerful that determine the actions of man. I suppose you have heard of the recent studies of Dr. Walter Cannon of Harvard of the group of remarkable alterations in bodily economy under emotion?"
I nodded and Kennedy resumed. "On the surface one may see the effect of blood vessels contracting, in pallor; one may see cold sweat, or the saliva stop when the tongue cleaves to the roof of the mouth, or one may see the pupils dilate, hairs raise, respiration become quick, or the beating of the heart, or trembling of the muscles, notably the lips. But one cannot see such evidences of emotion if he is not present at the time. How can we reconstruct them?"