something loose and cripple the mechanism.

A flight of seventy or eighty miles an hour would bring them well into
Canada by noon of the next day. They would have to there descend at,
or near, some town, and report themselves and the nature of their
flight to the authorities. This was to be done as a precaution in case
they had a breakdown somewhere in crossing British possessions. A
passport would then aid them if they were obliged to call upon the
authorities in the heart of Canada for aid.

But at present none of these things bothered the party much. Sudds and
the professor slept as though they were in their beds at home. The old
hunter could sleep anywhere, and awake instantly with all his faculties
about him. And the scientist slept profoundly because his body was
exhausted.

Under the brilliant moon the _Snowbird_ swung along the air-way like a
veritable bird. Jack increased the revolutions of the propellers
a trifle and the ship responded like a spirited horse to the spur. She
darted ahead at a ninety mile speed and Washington White emitted a
mournful groan.

"What's the matter with you now, Wash?" shouted Mark, for they all
wore ear-tabs and had to shout to make one another hear.

"Oh, lawsy-massy on us!" groaned Wash. "I'se got sech a misery, Massa
Mark, I dunno but ma time has camed."

"What time has come?" demanded Mark, without much sympathy. "It'll be
time for you to hustle and get us something to eat before long."