"Just overtook a farmer down the road," he panted. "Says he saw an automobile waiting at the stone bridge and later it pa.s.sed 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 gra.s.s 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 gla.s.s 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?"

He paused a moment, then resumed. "There are organs hidden deep in the body which do not reveal so easily the emotions. But the effect often outlasts the actual emotion. There are special methods by which one can study the feelings. That is what I have been doing here."

"But how can you?" I queried.

"There is what is called the sympathetic nervous system," he explained.

"Above the kidney there are also glands called the suprarenal which excrete a substance known as adrenin. In extraordinarily small amounts adrenin affects this sympathetic system. In emotions of various kinds a reflex action is sent to the suprarenal glands which causes a pouring into the blood of adrenin.

"On the handkerchief of Gloria Brackett I obtained plenty of comparatively fresh blood. Here in this machine I have between these two pincers a minute segment of rabbit intestine."

He withdrew the solution from the cylinder with a pipette, then introduced some more of the dissolved blood from the handkerchief. The first effect was a strong contraction of the rabbit intestine, then in a minute or so the contractions became fairly even with the base line on the card.

"Such tissue," he remarked, "is noticeably affected by even one part in over a million of adrenin. See. Here, by the writing lever, the rhythmical contractions are recorded. Such a strip of tissue will live for hours, will contract and relax beautifully with a regular rhythm which, as you see, can be graphically recorded. This is my adrenin test."

Carefully he withdrew the ruled paper with its tracings.

"It's a very simple test after all," he said, laying beside this tracing another which he had made previously. "There you see the difference between what I may call 'quiet blood' and 'excited blood.'"

I looked at the two sets of tracings. Though they were markedly different, I did not, of course, understand what they meant. "What do they show to an expert?" I asked, perplexed.

"Fear," he answered laconically. "Gloria Brackett did not go voluntarily. She did not elope. She was forced to go!"

"Attacked and carried off?" I queried.

"I did not say that," he replied. "Perhaps our original theory that her nose was bleeding may be correct. It might have started in the excitement, the anger and fear at what happened, whatever it was.

Certainly the amount of adrenin in her blood shows that she was laboring under strong enough emotion."

Our telephone rang insistently and Kennedy answered it. As he talked, although I could hear only one side of the conversation, I knew that the message was from Chase and that he had found something important about the missing necklace.

"What was it?" I asked eagerly as he hung up the receiver.

"Chase has traced the necklace," he reported; "that is, he has discovered the separate stones, unset, p.a.w.ned in several shops. The tickets were issued to a girl whose description exactly fits Gloria Brackett."

I could only stare at him. What we had all feared had actually taken place. Gloria must have taken the necklace herself. Though we had feared it and tried to discount it, nevertheless the certainty came as a shock.

"Why should she have taken it?" I considered.

"For many possible reasons," returned Kennedy. "You saw the life she was leading. Her own income probably went to keeping those harpies going.

Besides, her mother had cut her allowance. She may have needed money very badly."

"Perhaps they had run her into debt," I agreed, though the thought was disagreeable.

"How about that other little woman we saw?" suggested Kennedy. "You remember how Gloria seemed to stand in fear of Du Mond? Who knows but that he made her get it to save her reputation? A girl in Gloria's position might do many foolish things. But to be named as co-respondent, that would be fatal."

There was not much comfort to be had by either alternative, and we sat for a moment regarding each other in silence.

Suddenly the door opened. Mrs. Brackett entered. Never have I seen a greater contrast in so short a time than that between the striking society matron who first called on us and the broken woman now before us. She was a pathetic figure as Kennedy placed an easy chair for her.

"Why, what's the matter?" asked Kennedy. "Have you heard anything new?"

She did not answer directly, but silently handed him a yellow slip of paper. On a telegraph blank were written simply the words, "Don't try to follow me. I've gone to be a war nurse. When I make good I will let you know. Gloria."

We looked at each other in blank amazement. That was hardly an easy way to trace her. How could one ever find out now where she was, in the present state of affairs abroad, even supposing it were not a ruse to cover up something?

Somehow I felt that the message did not tell the story. Where was Du Mond? Had he fled, too,--perhaps forced her to go with him when Mrs. Du Mond appeared? The message did not explain the struggle and the fear.

"Oh, Mr. Kennedy," pleaded Mrs. Brackett, all thought of her former pride gone, as she actually held out her hands imploringly and almost fell on her knees, "can't you find her--can't you _do_ something?"

"Have you a photograph of Gloria?" he asked hurriedly.

"Yes," she cried eagerly, reaching into her mesh bag and drawing one out. "I carry it with me always. Why?"

"Come," exclaimed Kennedy, seizing it. "It occurs to me that it is now or never that this device of Franconi's must prove that it is some good.

If she really went, she wasted no time. There's just a bare chance that the telephote has been placed on some of these vessels that are carrying munitions abroad. Franconi says that he has developed it for its war value."

As fast as Mrs. Brackett's chauffeur could drive us, we motored down to South Side Beach and sought out the little workshop directly on the ocean where Franconi had told us that we should always be welcome.

He was not there, but an a.s.sistant was. Kennedy showed him the card that Franconi had given us.

"Show me how the machine works," he asked, while Mrs. Brackett and I waited aside, scarcely able to curb our impatience.

"Well," began the a.s.sistant, "this is a screen of very minute and sensitive selenium cells. I don't know how to describe the process better than to say that the tones of sound, the human voice, have hundreds of gradations which are transmitted, as you know, by wireless, now. Gradations of light, which are all that are necessary to produce the illusion of a picture, are far simpler than those of sound. Here, in this projector--"

"That is the transmitting part of the apparatus?" interrupted Kennedy brusquely. "That holder?"

"Yes. You see there are hundreds of alternating conductors and insulators, all synchronized with hundreds of similar receivers at the--"

"Let me see you try this photograph," interrupted Kennedy again, handing over the picture of Gloria which Mrs. Brackett had given him. "Signor Franconi told me he had the telephote on several outgoing liners. Let me see if you can transmit it. Is there any way of sending a wireless message from this place?"

The a.s.sistant had shoved the photograph into the holder from which each section was projected on the selenium cell screen.