"Right, Thad; and Corny was not so far out of the way as he meant to be, for to a sailor the wind is about all there is of the weather. When a flaw comes, and you have to carry the tiller to the weather side of the boat to keep her on her course, that is a weather helm," Dory proceeded.

"I see it!" exclaimed Nat Long, as though he had made a great discovery.

"I don't believe you do, Nat," interposed the skipper. "Suppose you don't carry the tiller to the weather side, what will happen then?"

"I don't know that any thing will happen," answered Nat, rather abashed at his own ignorance.

"That's the point of all that has been said," added Dory.

"Well, what will happen? Will she tip over?" asked Nat.

"That is the very thing she won't do; and that's the reason why a boat ought to carry a weather helm, so that she won't tip over if the helmsman don't happen to have his eyes wide open tight. If you don't put the helm to the weather side, the head of the boat will come up to the wind. As she comes up into the wind, it spills the sail."

"Spills the sail!" exclaimed Corny, who could hold in no longer. "I have heard of spilling the milk, but not of spilling a sail."

"It means to spill the wind out of the sail," added Dory. "In other words, it takes the wind out of the sail, and it don't press against the sail any longer. And, if the wind don't press against the sail, of course it won't tip the boat over."

"That's plain enough. I understand that first-rate," said Thad. "If a puff brings the boat up into the wind, then the wind don't bear hard on the sail, and it won't upset the boat."