the captives replied.

"I think it will be better to give in to him at least for a while,"
said Captain Warner in a low voice to Tom. "We need water, and will
soon need food. We can think and plan better if we are well nourished."

"Then you think I should promise not to raise a row?"

"For the time being--yes."

"Well, I am waiting!" came in sharp tones from the other side of the
portal.

"Our answer is--yes," spoke Tom. "We will not try to get out--just
yet," he added significantly.

A key was heard grating in the lock, and, a moment later, the door slid
back. Through the opening could be seen La Foy and some of his men
standing armed. Others had packages of food and jugs of water. A
plentiful supply of the latter was carried aboard the Mars.

"Keep back from the door!" was the stern command of La Foy. "The food
and drink will be passed in only if you keep away from the entrance.
Remember my men are armed!"

The warning was hardly needed, for the weapons could plainly be seen.
Tom had half a notion that perhaps a concerted rush would carry the day
for him and his friends, but he was forced to abandon that idea.

While the guards looked on, others of the "pirate crew," as Ned dubbed
them, passed in food and water. Then the door was locked again.

They all felt better after drinking the water, which was made cool by
evaporation, for the airship was quite high above the earth when Tom's
enemies captured it, and the young inventor felt sure it had not
descended any.

No one felt much like eating, however, so the food was put away for a
time. And then, somewhat refreshed, they began looking about for some
means of getting out of their prison.

"Of course we might batter down the door, in time, by using some of
these boxes as rams," said Tom. "But the trouble is, that would make a
noise, and they could stand outside and drive us back with guns and
pistols, of which they seem to have plenty."

"Yes, and they could turn some of your own quick-firers on us," added
Captain Warner. "No, we must work quietly, I think, and take them
unawares, as they took us. That is our only plan."

"We will be better able to see what we have here by daylight," Tom
said. "Suppose we wait until morning?"

That plan was deemed best, and preparations made for spending the night
in their prison.

It was a most uncomfortable night for all of them. The floor was their
only bed, and their only covering some empty bags that had cont