"No, you won't," replied Dick Short, to whom the remark was addressed. "You won't know anything at all about it until we come to the work to be done."

"Why don't he tell us what we are to do?" asked Dick. "I should like to know something about it."

"It was a trick of Captain Gildrock to keep his business to himself, and Dory takes after him. The principal thinks the fellows can obey orders better when they don't know what is coming than they can when they understand all about it. Every fellow thinks he knows best how to do almost anything."

"I don't know but he is right. I never saw a horse tumble down in the street, but every one of the crowd around him wanted to boss the job of getting him on his feet again," added Dick.

"I have called you together, fellows, to say that it will be necessary to keep as still as possible on the expedition of to-night;" said Captain Dornwood, when the ship's company had all gathered on the forward deck. "I don't know that a noise would defeat our plans, but I am very much afraid it would cause us some trouble. I don't believe in any yelling when we are on duty, but I fear it would make mischief to-night. Please to observe this request in the strictest possible manner."

"Where are we going, Captain Dornwood?" asked Bark Duxbury, one of the new students.

"Going to work now," replied the captain with a smile. "All hands to their stations."

The ship's company separated, and all the officers and seamen went to the places where they belonged. Though no meals were to be served during the night, so far as was known, the cooks went to the galley, and the stewards to the forward cabin. The second officer, with his gang, went on board of the gundalow, and at the order from the captain the pilot on duty rang the bell to back her. By this movement the scow was hauled out from the wharf, and the bell to go ahead was given.

Mr. Miker and some of his men stood on the shore watching the departure of the expedition, and wondering what sort of a mission the students were going upon at that time in the evening. But the Sylph and her tow soon disappeared beyond the trees at the lower end of Beechwater. Dory was on the hurricane deck, keeping a sharp lookout upon everything that was done.