"Oh," said little Jacob. And he went off to find Captain Solomon and to ask him if he might stay up that night, until they hove the lead. Heaving the lead is called sounding. And Captain Solomon laughed and said that he guessed so.
So little Jacob didn't go to bed so early as he generally did, but he stayed up to see them heave the lead. And, about nine o'clock, Captain Solomon called little Jacob and little Sol and told them that they had better be ready, for he was just going to begin taking soundings. So the two boys went to look for the sailor with the lead line.
They found him standing by the rail just where the ship was widest, and by his side was a lantern, lighted. The mate had another lantern, and the light from those two lanterns was the only light that they could see. And, just as the boys came up, the sailor began to swing the lead to and fro.
He swung it farther and farther, each time, like a pendulum to a clock. And, when it was swinging pretty far, he let the line go, so that the heavy lead went ahead of the ship and fell into the water. As soon as he heard it strike the water, the sailor grabbed for the line quickly, and he caught it, but he let it slip through his hand. And he felt the lead strike the bottom. By the time the lead had struck the bottom, the ship had almost caught up to the place where it had gone into the water, so that the line was straight up and down.
The sailor began to pull it in, feeling, with his fingers, for the wet part. When he had come to that, he held it in the light of the lantern for a moment.
"Ten fathom," he called. Then he pulled the lead up.
The mate took it and looked at the part that had been greased. "Mud," he said; and he wiped it off on his finger and showed it to Captain Solomon.
"All right," said Captain Solomon, when he had looked at the mud. "Better keep the lead going for a while."
So the sailor wiped the bottom of the lead clean, and smeared it with grease again. Little Jacob watched him swing it and heave it and pull it in. He wondered whether it was hard or easy to do what the sailor did; whether he could do it when he grew up. The great lead would be too much for a little boy, he knew. But it looked easy.