"Yes?"

"You see she told me what a good doctor you were, and I asked her how she could afford you, because she's much poorer than we are. I've been in her house and I know. And then she told me about the Club, and I thought I'd ask you—and—oh, I don't want Mother to be worried! Can't we be Club, too, the same as Mrs. Viney?"

The Doctor was silent. He was rather poor himself, and he had been rather pleased at getting a new family to attend. So I think his feelings at that minute were rather mixed.

"You aren't cross with me, are you?" said Bobbie, in a very small voice.

The Doctor roused himself.

"Cross? How could I be? You're a very sensible little woman. Now look here, don't you worry. I'll make it all right with your Mother, even if I have to make a special brand-new Club all for her. Look here, this is where the Aqueduct begins."

"What's an Aque—what's its name?" asked Bobbie.

"A water bridge," said the Doctor. "Look."

The road rose to a bridge over the canal. To the left was a steep rocky cliff with trees and