an child; moreover, the workshop
was warm, and his own room would be freezing cold, and he was so well
used to the vile odour of the chemical stuff, that he did not notice it
at all. It was even said to be healthy to breathe the fumes of it, as
the air of a tannery is good for the lungs, or even London coal smoke.
But it is one thing to resolve to keep awake, even with many delightful
things to think about; it is quite another to keep one's eyes open when
they are quite sure that they ought to be shut, and that you ought to be
tucked up in bed. The boy found it so, and in less than half an hour his
arm had got across the back of the chair, his cheek was resting on it
quite comfortably, and he was in dreamland with his father, and quite as
perfectly happy.
So the two slept in their chairs under the big bright lamps; and while
they rested the Air-Motor worked silently, hour after hour, and the
heavy wheel whirled steadily on its axle, and only its soft and drowsy
humming was heard in the still air.
That was the most refreshing sleep Overholt remembered for a long time.
When he stirred at last and opened his eyes, he did not even know that
he had slept, and forgot that he had closed his eyes when he saw the
engine moving. He thought it was still nine o'clock in the evening, and
that the boy might as well finish his little nap where he was, before
going to bed. Newton might sleep till ten o'clock if he liked.
The lamps burned steadily, for they held enough oil to last sixteen
hours when the winter darkness is longest, and they had not been lighted
till after supper.
But all at once Overholt was aware of a little change in the colour of
things, and he slowly rubbed his eyes and looked about him, and towards
the window. The moon had set long ago; there was a grey light on the
snow outside and in the clear air, and Overholt knew that it was the
dawn. He looked at his watch then, and it was nearly seven o'clock; for
in New York and Connecticut, as you may see by your pocket calendar, the
sun rises at twenty-three minutes past seven on Christmas morning.
He sprang to his feet in astonishment, and at the sound Newton awoke and
looked up in blank and sleepy surprise.
"Merry Christmas, my boy!" cried Overholt, and he laughed happily.
"Not yet," answered Newton in a disappointed tone, and rubbing his arm,
which was stiff. "I've got to go to bed first, I suppose."
"Oh no! You and I have slept in our chairs all night
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