<SPAN name="chap20"></SPAN>
<h3> Chapter Twenty </h3>
<h3> Just in Time </h3>
<p>While Dr. Hendrix was in his office, getting ready to make the
thrilling trip through the air with Tom, the young inventor spent a few
minutes going over his monoplane. The wonderful little craft had made
her first big flight in excellent time, though Tom knew she could do
better the farther she was flown. Not a stay had started, not a guy
wire was loose. The motor had not overheated, and every bearing was as
cool as though it had not taken part in thousands of revolutions.</p>
<p>"Oh, I can depend on you!" murmured Tom, as he looked to see that the
propeller was tight on the shaft. He gave the bearing a slight
adjustment to make sure of it.</p>
<p>He was at this when the specialist reappeared. Dr. Hendrix, after his
first show of excitement, when he had made his decision to accompany
Tom, had resumed his usual calm demeanor. Once again he was the grave
surgeon, with his mind on the case before him.</p>
<p>"Well, is my auto ready?" he asked absentmindedly. Then, as he saw the
little aeroplane, and Tom standing waiting beside it, he added: "Oh, I
forgot for the moment that I was to make a trip through the air,
instead of in my car. Well, Mr. Swift, are we all ready?"</p>
<p>"All ready," replied the young inventor. "We're going to make fast
time, Dr. Hendrix. You'd better put this on," and Tom extended a face
protector.</p>
<p>"What's it for?" The physician looked curiously at it.</p>
<p>"To keep the air from cutting your cheeks and lips. We are going to
travel a hundred miles an hour this trip."</p>
<p>"A hundred miles an hour!" Dr. Hendrix spoke as though he would like to
back out.</p>
<p>"Maybe more, if I can manage it," went on Tom, calmly, as he proceeded
to remove the bag of sand from the place where the surgeon was to sit.
Then he looked to the various equilibrium arrangements and the control
levers. He was so cool about it, taking it all for granted, as if
rising and flying through the air at a speed rivaling that of the
fastest birds, was a matter of no moment, that Dr. Hendrix was
impressed by the calm demeanor of the young inventor.</p>
<p>"Very well," said the surgeon with a shrug of his shoulders, "I guess
I'm game, Tom Swift."</p>
<p>The doctor took the seat Tom pointed out to him, with his bag of
instruments on his knees. He put on the face protector, and had, at the
suggestion of our hero, donned a heavy coat.</p>
<p>"For it's cold in the upper regions," said Tom.</p>
<p>Several servants in the physician's household had gathered to see him
depart in this novel fashion, and the chauffeur of the auto, in which
the specialist usually made his calls, was also there.</p>
<p>"I'll give you a hand," said the chauffeur to the young inventor. "I
was at an aviation meet once, and I know how it's done."</p>
<p>"Good," exclaimed Tom. "Then you can hold the machine, and shove when I
give the word."</p>
<p>Tom started the propeller himself, and quickly jumped into his seat.
The chauffeur held back the Humming-Bird until the young aviator had
speeded up the motor.</p>
<p>"Let go!" cried the youthful inventor, and the man gave the little
craft a shove. Across the rather uneven ground of the doctor's yard it
ran, straight for a big iron barrier.</p>
<p>"Look out! We'll be into the fence!" shouted the surgeon. "We'll be
killed!" He seemed about to leap off.</p>
<p>"Sit still!" cried Tom, and at that instant he tilted the elevation
planes, and the craft shot upward, going over the fence like a circus
horse taking a seven-barred gate.</p>
<p>"Oh!" exclaimed the physician in a curious voice. They were off on
their trip to save the life of Mr. Swift.</p>
<p>What the sensations of the celebrated specialist were, Tom never
learned. If he was afraid, his fright quickly gave place to wonder, and
the wonder soon changed to delight as the machine rose higher and
higher, acquired more speed, and soared in the air over the country
that spread out in all directions from Kirkville.</p>
<p>"Magnificent! Magnificent!" murmured the doctor, and then Tom knew that
the surgeon was in the grip of the air, and was one of the "bird-men."</p>
<p>Every moment the Humming-Bird increased her speed. They passed over the
river near where men were working on the broken bridge. It was now no
barrier to them. Tom, noting the barograph, and seeing that they were
twenty-two hundred feet high, decided to keep at about that distance
from the earth.</p>
<p>"How fast are we going?" cried Dr. Hendrix, into the ear of the young
inventor.</p>
<p>"Just a little short of a hundred an hour!" Tom shouted back. "We'll
hit a hundred and five before long."</p>
<p>His prediction proved true, and when about forty miles from Shopton
that terrific speed had been attained. It seemed as if they were going
to have a trip devoid of incident, and Tom was congratulating himself
on the quick time made, when he ran into a contrary strata of air.
Almost before he knew it the Humming-Bird gave a dangerous and
sickening dive, and tilted at a terrifying angle.</p>
<p>"Are we going to turn turtle?" cried the doctor.</p>
<p>"I—I hope not!" gasped Tom. He could not understand why the
equilibrium weights did not work, but he had no time then to
investigate. Quickly he warped the wing tips and brought the craft up
on an even keel.</p>
<p>He gave a sigh of relief as the aeroplane was once more shooting
forward, and he was not mistaken when he thought he heard Dr. Hendrix
murmur a prayer of thankfulness. Their escape had been a narrow one.
Tom's nerve, and the coolness of the physician, had alone saved them
from a fall to death.</p>
<p>But now, as if ashamed of her prank, the Humming-Bird went along even
better than before. Tom was peering through the slight haze that hung
over the earth, for a sight of Shopton. At length the spires of the
churches came into view.</p>
<p>"There it is," he called, pointing downward. "We'll land in two minutes
more."</p>
<p>"No time to spare," murmured the doctor, who knew the serious nature of
the aged inventor's illness. "How long did it take us?"</p>
<p>"Fifty-one minutes," replied Tom, glancing at a small clock in front of
him. Then he shut off the motor and volplaned to earth, to the no small
astonishment of the surgeon. He made a perfect landing in the yard
before the shed, leaped from his seat, and called:</p>
<p>"Come, Dr. Hendrix!"</p>
<p>The surgeon followed him. Dr. Gladby and Dr. Kurtz came to the door of
the house. On their faces were grave looks. They greeted the celebrated
surgeon eagerly.</p>
<p>"Well?" he asked quickly, and they knew what he meant.</p>
<p>"You are only just in time," said Dr. Gladby, softly, and Tom,
following the doctors into the house, wondered if his trip with the
specialist had been in vain.</p>
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