He gave a sudden kick, flashed for a moment in the water, and was gone. Antony steadied the boat, and took another look at his landmarks.

Bill came up behind him with a loud explosion. “It’s pretty muddy,” he protested.

“Weeds?”

“No, thank the Lord.”

“Well, try again.”

Bill gave another kick and disappeared. Again Antony coaxed the boat back into position, and again Bill popped up, this time in front of him.

“I feel that if I threw you a sardine,” said Antony, with a smile, “you’d catch it in your mouth quite prettily.”

“It’s awfully easy to be funny from where you are. How much longer have I got to go on doing this?”