“Oh, yes,” said Mr. Ropesend; “I’ve just given it to Mr. Tackle to give to you. He will explain it to you,—how it works and all that. Right in the front office,—yes, that door. Good-morning.” And the skipper went out cursing softly.

In the front office he met the boy with the box containing the log and a note from Mr. Tackle delivering the same to him, in which he excused himself from explaining the management of the instrument by the fact that he was called out suddenly. The note concluded, however, with the remark that “the instrument was quite easy to regulate by means of the timber noggins, and that he anticipated no difficulty with it.”

The captain took the box and carried it on board his ship, and locked it in the cabin. He was going to sea the next morning, and, as he had a good deal to attend to, he couldn’t stop to investigate further.

When the ship had crossed the bar, the next afternoon, and backed her main-yards in order to put the pilot off, the mate brought out the box containing the log, and proposed to put the instrument over the taffrail. The third mate happened to be standing near and noticed him.

The third mate’s name was Joseph, but being a very young man, and very bright, having a fine grammar-school education, he was familiarly called Joe by his superiors for fear that the handle of “Mister” to his name might trim him too much by the head. Joe despised his superiors with all the scornful feeling that a highly educated sailor has for the more ignorant officers above him, and it required more than ordinary tact on his part to keep from getting into trouble.

“Why, the skipper don’t know enough to be mate of a liner,” said he to the steward one day in a burst of confidence. “As for Gantline, he don’t know nothing. You just wait and see if I don’t get a shove up before we make another voyage around the Cape.”

He had waited, but Joseph was still in his old berth this voyage.

It was natural he should be a little more scornful than ever now, and as he watched the mate clumsily handling the patent log a strong desire to revenge himself for slighted genius came upon him.

When the ship’s yards were squared again the skipper took up the log and examined it.

“I suppose you know how to regulate the machine, Mr. Gantline,” said he, addressing the mate.