That afternoon he went down the garden and whistled their agreed secret signal for Polly （she hadn‘t been able to get back the day before）.
“What luck？” said Polly， looking over the wall. “I mean， about your Mother？”
“I think.I think it is going to be all right，” said Digory. “But if you don’t mind I‘d really rather not talk about it yet. What about the rings？”
“I’ve got them all，” said Polly. “Look， it‘s all right， I’m wearing gloves. Let‘s bury them.”
“Yes， let’s. I‘ve marked the place where I buried the core of the Apple yesterday.”
Then Polly came over the wall and they went together to the place. But， as it turned out， Digory need not have marked the place. Something was already coming up. It was not growing so that you could see it grow as the new trees had done in Narnia； but it was already well above ground. They got a trowel and buried all the magic rings， including their own ones， in a circle round it.