But when he saw the blank which fell on their faces, and even on Kink's too, he knew that he had stumbled by chance on an excellent weapon, and he resolved to make the most of it.
"Come," he said, "the license.

I'm waiting to see it." Janet and Robert, who had by this time come up, were told of the difficulty.
"License ?" said Robert.

"What license ?" "All carriages must have licenses," said the policeman, "and all caravans have to produce theirs when called for, because they're always moving about." The children gathered round Kink to discuss it.

Kink said that it was all Greek to him.

He supposed, of course, that caravans had to have licenses, but he'd never heard of demands for them in the highroad.
"But do be civil to him, Master Robert," he implored.