Luke led the boys into the other shed, where Daisy and Bets were. He pointed to a shelf on which various bottles and tins stood. "It's there somewhere," he said.

The children looked. They picked up one bottle after another and sniffed it. But there was no turpentine at all.

"We've already looked, anyway," said Daisy.

Luke was puzzled. "It was there," he said. "I saw it myself yesterday. Where's it gone?"

Fatty began to feel excited, though he didn't quite know why.

"We've got to find that bottle," he said.

"Why?" asked Daisy.

"Don't know," said Fatty. "But we've got to. It's gone. Maybe it's been hidden away. We've got to find it."

"I bet old Buster could find it for us," said Fatty.

Luke went off to his work, still looking extremely gloomy. The others went to the wall. Pip and Fatty climbed over it and dropped down to the other side. Pip went to the garden-shed at the top of the garden, and found a small jar of turps.