There was another long, horrible wait; then there was a flash, and I see
Tom's head sink down outside the boat and disappear. He was on the
rope-ladder that dangled down in the air from the gunnel. The professor
let off a shout and jumped for him, and straight off it was pitch-dark
again, and Jim groaned out, "Po' Mars Tom, he's a goner!" and made a jump
for the professor, but the professor warn't there.

Then we heard a couple of terrible screams, and then another not so loud,
and then another that was 'way below, and you could only JUST hear it;
and I heard Jim say, "Po' Mars Tom!"

Then it was awful still, and I reckon a person could 'a' counted four
thousand before the next flash come. When it come I see Jim on his knees,
with his arms on the locker and his face buried in them, and he was
crying. Before I could look over the edge it was all dark again, and I
was glad, because I didn't want to see. But when the next flash come, I
was watching, and down there I see somebody a-swinging in the wind on the
ladder, and it was Tom!

"Come up!" I shouts; "come up, Tom!"

His voice was so weak, and the wind roared so, I couldn't make out what
he said, but I thought he asked was the professor up there. I shouts:

"No, he's down in the ocean! Come up! Can we help you?"

Of course, all this in the dark.

"Huck, who is you hollerin' at?"