he sloping street
that led from the river front. In the excitement I scarcely noticed
where we were going until we hurried up the steps to the Haswell
house.

The aged caretaker met us at the door. She was in tears. Upstairs in
the front room where we had first met the old man we found Dr. Burnham
working frantically over him. It took only a minute to learn what had
happened. The faithful Jane had noticed an odor of gas in the hall,
had traced it to Mr. Haswell's room, had found him unconscious, and
instinctively, forgetting the new Dr. Scott, had rushed forth for Dr.
Burnham. Near the bed stood Grace Martin, pale but anxiously watching
the efforts of the doctor to resuscitate the blue-faced man who was
stretched cold and motionless on the bed.

Dr. Burnham paused in his efforts as we entered. "He is dead, all
right," he whispered, aside. "I have tried everything I know to bring
him back, but he is beyond help."

There was still a sickening odor of illuminating gas in the room,
although the windows were now all open.

Kennedy, with provoking calmness in the excitement, turned from and
ignored Dr. Burnham. "Have you summoned Dr. Scott?" he asked Mrs.
Martin.

"No," she replied, surprised. "Should I have done so?"

"Yes. Send Jane immediately. Mr. Prescott, will you kindly be seated
for a few moments."

Taking off his coat, Kennedy advanced to the bed where the emaciated
figure lay, cold and motionless. Craig knelt down at Mr. Haswell's
head and took the inert arms, raising them up until they were extended
straight. Then be brought them down, folded upward at the elbow at
the side. Again and again he tried this Sylvester method of inducing
respiration, but with no more result than Dr. Burnham had secured. He
turned the body over on its face and tried the new Schaefer method.
There seemed to be not a spark of life left.

"Dr. Scott is out," reported the maid breathlessly, "but they are
trying to locate him from his office, and if they do they will send
him around immediately."

A ring at the doorbell caused us to think that he had been found, but
it proved to be the student to whom Kennedy had telephoned at his own
laboratory. He was carrying a heavy suitcase and a small tank.

Kennedy opened the suitcase hastily and disclosed a little motor, some
long tubes of rubber fitting into a small rubber cap, forceps, and
other paraphernalia. The student quickly attached one tube to the
little tank, while Kennedy gras