"No, sir."

"That's a live car. The barrels at each end have enough water in them to sink them to a certain depth. Then the slats, as you see, are nailed two-thirds of the way around the barrels, leaving just enough space for the water to flow in and out freely. They put the fish in that to tow them home alive. The slats are better than netting because sometimes the fishes catch their scales in the meshes and get hurt."

The run to the fish-trap was made in a few minutes, and the boat went inside to the 'pound,' the net was partly hauled up, and the professor took out his punch and the buttons. Colin had put on a pair of rubber boots and oilskin trousers, as had all the rest of the party, and he was ready for anything that came along.

"Do you want my slicker?" the professor asked him. "You're apt to get splashed."

"I don't mind a bit, thanks," answered the boy, rolling up his sleeves; "a little shower-bath will feel good on a hot day like this!"

"All right, then," the leader of the party declared, "we'll give you a chance to make yourself useful. Here you are!"

Colin took the large flat-bottomed net and awaited further instructions.

"Catch one of the salmon," he was told; "never mind the rest of the fish. And," he was warned, "don't bring the net clear out of the water."

"Very well, sir," the boy replied, then his curiosity getting the better of him, he asked, "Why not?"