Then he was on a train; the wire-gang were already forgotten; and he was thinking only of Madeline Fox, Clif Clawson, Angus Duer, and Max Gottlieb.

CHAPTER IV

I

Professor Max Gottlieb was about to assassinate a guinea pig with anthrax germs, and the bacteriology class were nervous.

They had studied the forms of bacteria, they had handled Petri dishes and platinum loops, they had proudly grown on potato slices the harmless red cultures of Bacillus prodigiosus, and they had come now to pathogenic germs and the inoculation of a living animal with swift disease. These two beady-eyed guinea pigs, chittering in a battery jar, would in two days be stiff and dead.

Martin had an excitement not free from anxiety. He laughed at it, he remembered with professional scorn how foolish were the lay visitors to the laboratory, who believed that sanguinary microbes would leap upon them from the mysterious centrifuge, from the benches, from the air itself. But he was conscious that in the cotton-plugged test-tube between the instrument-bath and the bichloride jar on the demonstrator’s desk were millions of fatal anthrax germs.

The class looked respectful and did not stand too close. With the flair of technique, the sure rapidity which dignified the slightest movement of his hands, Dr. Gottlieb clipped the hair on the belly of a guinea pig held by the assistant. He soaped the belly with one flicker of a hand-brush, he shaved it and painted it with iodine.

(And all the while Max Gottlieb was recalling the eagerness of his first students, when he had just returned from working with Koch and Pasteur, when he was fresh from enormous beer seidels and Korpsbrüder and ferocious arguments. Passionate, beautiful days! Die goldene Zeit! His first classes in America, at Queen City College, had been awed by the sensational discoveries in bacteriology; they had crowded about him reverently; they had longed to know. Now the class was a mob. He looked at them— Fatty Pfaff in the front row, his face vacant as a doorknob; the co-eds emotional and frightened; only Martin Arrowsmith and Angus Duer visibly intelligent. His memory fumbled for a pale blue twilight in Munich, a bridge and a waiting girl, and the sound of music.)

He dipped his hands in the bichloride solution and shook them—a quick shake, fingers down, like the fingers of a pianist above the keys. He took a hypodermic needle from the instrument-bath and lifted the test-tube. His voice flowed indolently, with German vowels and blurred W’s:

“This, gentlemen, iss a twenty-four-hour culture of Bacillus anthracis. You will note, I am sure you will have noted already, that in the bottom of the tumbler there was cotton to keep the tube from being broken. I cannot advise breaking tubes of anthrax germs and afterwards getting the hands into the culture. You might merely get anthrax boils—”