"Until it ends."

"Are we going round the world?" asked Phil Evans ironically.

"Further than that," said Robur.

"And if this voyage does not suit us?" asked Uncle Prudent.

"It will have to suit you."

That is a foretaste of the nature of the relations that were to
obtain between the master of the "Albatross" and his guests, not to
say his prisoners. Manifestly he wished to give them time to cool
down, to admire the marvelous apparatus which was bearing them
through the air, and doubtless to compliment the inventor. And so he
went off to the other end of the deck, leaving them to examine the
arrangement of the machinery and the management of the ship or to
give their whole attention to the landscape which was unrolling
beneath them.

"Uncle Prudent," said Evans, "unless I am mistaken we are flying over
Central Canada. That river in the northwest is the St. Lawrence. That
town we are leaving behind is Quebec."

It was indeed the old city of Champlain, whose zinc roofs were
shining like reflectors in the sun. The "Albatross" must thus have
reached the forty-sixth degree of north latitude, and thus was
explained the premature advance of the day with the abnormal
prolongation of the dawn.