able place! At his feet he saw a small wooden box fastened to
the dash-board. He did not know what it was, but on a blind chance he
kicked it again and again until it splintered beneath his heels. The
machine swerved across the road and he fought with the crazed man for
the possession of the wheel. He was strong and he had this much at
heart, but the other had the super-human strength of the crazed. Even
as they struggled the machine began to slow down and within a few
hundred yards came to a standstill. In destroying the coil box he had
reached the heart.

The driver turned upon him, but Donaldson managed to secure a good grip
and dragged the fellow to the ground. The latter was up in a minute
and faced him with that gleam of devilish hatred that marks the foiled
maniac. The girl started to separate the two men, but it was
unnecessary; she saw the murder fade from her companion's face before
the calm untroubled gaze of the other. She saw his strained body
relax, she saw his fists unclench, and she saw him shrink back to her
side trembling in fright. The demon in him had been quelled by the
unflinching eyes of the sane man.

There was, luckily, no gathering of a crowd, for no one had witnessed
the struggle in the machine. A few steps beyond, the blue and red
lights of a drugstore stained the sidewalk. The girl seized the man's
arm and turned to Donaldson.

"He is my brother," she explained. "We must leave the machine and get
him home at once. Can we order a cab from somewhere?"

"At the drugstore we can telephone for one and also reach your garage."

"Would you mind attending to it?" she asked anxiously. "We will wait
here,--in the car."

He hesitated.

"I don't like to leave you here alone," he said.

"I shall be quite safe--really."

"But in the drugstore it is warmer, and--"

"No, no," she broke in hurriedly. "I--I would much rather not."

Without further parley he took the address of the garage where the
machine had been hired, and walked on to the drugstore. He was back
again in five minutes, relieved to find her safe and the brother still
quiet. While waiting for the cab it occurred to him that he should
also have telephoned for a physician to meet them when they reached the
house. But Miss Arsdale objected at once to this.

"I think we had better not. But if you would--it's asking a great deal
of you--if you yourself would ride back with us."

"I had intended to do that," he as