For a moment I thought there was going to be a fight, but Kennedy moved un.o.btrusively between the two men. As for Madame Dupres, I felt that really she was a match for both of them.

Instead of getting mad, however, Ames merely laughed.

"Why, Haynes," he said quietly, "I don't think you ought to complain. I understand that you, now representing Delaney's Texas syndicate, have already signed the final contract for the deal with those whom Madame Dupres represents and have received a certified check from them as a first payment to bind the bargain."

Haynes turned almost livid, then recovering himself, glanced at Madame Dupres.

"Why, Harris, I didn't think there was any secrecy about it now," she said, seeing the change in him. "If there is, I'm sorry."

"There isn't," replied Haynes, quickly recovering his composure. "Only I just didn't like to see a lawyer, an outsider, quizzing you, that's all."

Jealousy was stamped in every line of Haynes' face. Ames said nothing, but it was impossible to escape the look of gratification which he shot at Kennedy as he brought out the startling new development.

Madame Dupres was clever enough to see that no good could come of prolonging an interview for which now there was an excuse to break up.

"Take me in to lunch, Harris," she said, slipping her arm familiarly into his. "Good-morning, gentlemen."

Somehow I felt that she would have liked to add, "And if you see the Baroness, tell her I have beaten her to it."

Ames watched them depart with an air of cynical satisfaction, paused a moment, then in turn excused himself from us.

What did it mean? What was behind all this intrigue. Was it merely to get this cattle contract, big as that was?

We lunched together at the St. Quentin, and it was evident that Madame Dupres was doing her best to smooth over the ruffled feelings of her lover.

Luncheon over, Kennedy plunged with redoubled energy into his laboratory investigation. He said little, but I could tell from his manner that he had found something that was very fascinating to him.

CHAPTER XV

THE GERM OF ANTHRAX

It was not until the middle of the afternoon that there came a sudden, brief message from the Secret Service in Washington:

Mr. Craig Kennedy, New York.

I have located the Baroness Von Dorf in a private sanitarium here and will have her in New York tonight by eight o'clock.

BURKE.

"In a private sanitarium--will have her in New York tonight," reread Craig, studying the message. "Then it wouldn't seem that there could be much the matter with her."

For a few moments he paced the laboratory floor, alternately studying the boards and the yellow telegram. At last, his face seemed to light up as if he had reasoned something out to his satisfaction. Quickly he reached for the telephone and called Dr. Leslie.

"I shall have the Baroness here tonight at eight, Leslie," I heard him say. "Don't tell a soul about it. But I'd like to have you make all the arrangements to secure the attendance of Haynes, Ames, and Madame Dupres here just a bit ahead of that time."

There was nothing that I could do to aid Craig more in the hours that remained than to efface myself, and I did it in the most effectual way I could think of, compatible with my interest in the case. I rode down to Dr. Leslie's office and dined hurriedly with him. The only new information I gleaned was that Haynes had visited him during the afternoon and had outlined his theory of cyanogen, which certainly seemed to me to fit in quite readily with the facts.

When we reached the laboratory, early, Kennedy was still absorbed in studying his microscope. He said nothing, but apparently had gained an air of confidence which he lacked the night before.

The Baroness had not yet arrived, but a few minutes after us came Ashby Ames, still complaining about the closing of his apartment and the inconvenience the whole affair had put him to. Haynes arrived and Ames cut short his tirade, glancing resentfully at the veterinary as though in some way he were responsible for his troubles. Madame Dupres arrived shortly, and I could not help noticing that Haynes was patently jealous of even the nod of recognition she gave to Ames.

"I don't think I need say that this is one of the most baffling cases that we have ever had," began Kennedy, with a glance at Dr. Leslie.

"It certainly is," chimed in the coroner, as though he had been appealed to for corroboration.

"In the first place," resumed Kennedy, "I discovered in the air up there in Delaney's room just a trace of cyanogen."

Haynes nodded approvingly, glancing from one to the other of us.

"But," added Craig, as if he had built up a house of cards merely to demolish it, "I don't think that cyanogen was the cause of Delaney's death--although it furnished the clew."

"What could it have been, then?" demanded Haynes, his face clouding.

Kennedy looked at him calmly. "You've heard of anthrax?" he asked simply.

"Y-yes," replied Haynes, meeting his eye fixedly. "Murrain--the cattle disease."

"That is so deadly to human beings sometimes," added Craig. "Well, I've found something very much like anthrax germs in the sweepings that I took up with the vacuum cleaner up there."

Dr. Leslie was listening intently.

"I can't see how it could have been anthrax," he put in, slowly shaking his head. "Why, Kennedy, the symptoms were entirely different."

"No, this was a poisoning of some kind," added Dr. Haynes. "Dr. Leslie himself tells me that you found traces of cyanogen in the air--and you have just said so, too."

Kennedy indicated the microscope. "Take a look at that slide under the lens," he said simply.

I was nearest and as he evidently meant each of us to look, I did so.

Under the high-power lens I could see some little roundish dots moving slowly through the field.

Haynes looked next. "But, Professor Kennedy," he objected, almost as soon as he had time for a good look, "the bacilli of anthrax have normally the form of straight bars strung together in a row."

"Yes, rod bacilli," added Dr. Leslie, also looking. "Like long rows of hyphens, slender cylindric, non-motile chains joined end to end."

We looked at Craig inquiringly.

"Like that," he indicated, subst.i.tuting another slide.

We looked again. The field had somewhat the appearance of an exaggerated war map with dark units of supposed troops.

"That's it," nodded Haynes.

Kennedy removed the slide. "Those are some anthrax germs I obtained here in the city from a pathologist," he said, turning a switch that threw on in a lamp a peculiar, purplish light. "This is a machine for the propagation of ultra-violet rays."

He placed the second slide, with its germs of anthrax, in the light, allowing it to play over the slide.