to venture much beyond this known portion.
Tom Sawyer knew as much of the cave as any one.

The procession moved along the main avenue some three-quarters of a
mile, and then groups and couples began to slip aside into branch
avenues, fly along the dismal corridors, and take each other by
surprise at points where the corridors joined again. Parties were able
to elude each other for the space of half an hour without going beyond
the "known" ground.

By-and-by, one group after another came straggling back to the mouth
of the cave, panting, hilarious, smeared from head to foot with tallow
drippings, daubed with clay, and entirely delighted with the success of
the day. Then they were astonished to find that they had been taking no
note of time and that night was about at hand. The clanging bell had
been calling for half an hour. However, this sort of close to the day's
adventures was romantic and therefore satisfactory. When the ferryboat
with her wild freight pushed into the stream, nobody cared sixpence for
the wasted time but the captain of the craft.

Huck was already upon his watch when the ferryboat's lights went
glinting past the wharf. He heard no noise on board, for the young
people were as subdued and still as people usually are who are nearly
tired to death. He wondered what boat it was, and why she did not stop
at the wharf--and then he dropped her out of his mind and put his
attention upon his business. The night was growing cloudy and dark. Ten
o'clock came, and the noise of vehicles ceased, scattered lights began
to wink out, all straggling foot-passengers disappeared, the village
betook itself to its slumbers and left the small watcher alone with the
silence and the ghosts. Eleven o'clock came, and the tavern lights were
put out; darkness everywhere, now. Huck waited what seemed a weary long
time, but nothing happened. His faith was weakening. Was there any use?
Was there really any use? Why not give it up and turn in?

A noise fell upon his ear. He was all attention in an instant. The
alley door closed softly. He sprang to the corner of the brick store.
The next moment two men brushed by him, and one seemed to have
something under his arm. It must be that box! So they were going to
remove the treasure. Why call Tom now? It would be absurd--the men
would get away with the box and never be found again. No, he would
stick to their wake and follow them; he would trust to the darkness for
security from disco