Finally, standing on top of the piled-up coal, Judy discovered a tiny shutter that slid open and let in a little daylight. It was about the width of the shovel and only a few inches high.

“Even Blackberry couldn’t squeeze through that,” she told Horace.

Just the same they both called, “Here, kitty! Kitty! Kitty!” in their most coaxing tones.

Soon the cat peered in at them and yowled in what Judy called his asking voice. “Open it a little wider,” he seemed to be saying.

“We can’t! Oh, Blackberry! Help us!” cried Judy. “Somebody please hear us! Help! Help!”

“We’ll have to keep calling from time to time.” Horace spoke as if her frantic cry had been just plain common sense. “What do you see outside?” he asked.

“Nothing much except cement. Oh dear! I hoped we’d be under the garden.”

Horace climbed up and looked out. He had a good sense of direction. “We must be under the outer wall of the pool,” he said. “That’s about where Blackberry was sitting. No doubt he jumped down in a hurry when the fountain went on. This tunnel seems to go around it and then underneath the main fountain. I’m afraid the shovel won’t be much of a help, sis. We can’t widen the coal chute without cracking the cement and letting in more water.”

“I guess you’re right,” Judy admitted. “And it’s probably reinforced with something so we couldn’t get through anyway. But maybe we can send Blackberry—”

“That’s an idea!” Horace interrupted. “I’ll write a note while you collar him. It should be easy. He’s trying to get in.”