“I’m afraid it would be wasted on William,” Roger replied seriously. “William, I feel sure, is a dogmatist of the most bigoted type if ever there was one; and to lecture to him on the futility of dogma would be as ineffective as to harangue a hippopotamus on the subject of drawing-room etiquette. No, I just want to sound William a little. Not that I think it will really be of much help to us, but just at present I’m turning every stone I can see.”

In due course William was run to earth in a large greenhouse. He was mounted unhappily on an exceedingly rickety pair of steps and engaged in tying up a vine. On seeing Roger he hastily descended to firm ground. William did not believe in taking chances.

“Good-afternoon, William,” said Roger brightly.

“Arternoon, sir,” William responded suspiciously.

“I’ve just been having a chat with your wife, William.”

William grunted noncommittally.

“I was telling her that a friend of mine, whom I expected to come up to the house to see me last night, never turned up; and I was wondering if you’d seen anything of him down at the lodge.”

William ostentatiously busied himself with a small plant.

“Never see’d no one,” he observed with decision.

“No? Never mind, then. It doesn’t really matter. That’s an interesting job you’ve got on hand, William. You take a plant out of its pot, sniff its roots and put it back again; is that it? Now what operation do you call that in the science of horticulture?”