He put out a line and opened a book; and from that time on he was a part of the landscape every day from 10 A.M. to 4 P.M. At noon he would eat some sort of a lunch, reading as he ate.

He apparently never looked toward us, but he was always there. It was the most extraordinary thing. At first we thought he had found a remarkable fishing-place; but he seemed to catch very few fish. It was Tish, I think, who found the best explanation.

"He's providing himself with an alibi," she stated. "How can he be a spy when we see him all day long? Don't you see how clever it is?"

It was the more annoying because we had arranged a small cove for soap-and-water bathing, hanging up a rod for bath-towels and suspending a soap-dish and a sponge-holder from an overhanging branch. The cove was well shielded by brush and rocks from the island, but naturally was open to the river.

It was directly opposite this cove that Mr. McDonald took up his position.

This compelled us to bathe in the early morning, while the water was still cold, and resulted in causing Aggie a most uncomfortable half-hour on the fourth morning of our stay.

She was the last one in the pool, and Tish absent-mindedly took her bathrobe and slippers back to the camp when she went. Tish went out in the canoe shortly after. She was learning to use one, with a life preserver on--Tish, of course, not the canoe. And Mr. McDonald arriving soon after, Aggie was compelled to sit in the water for two hours and twenty minutes. When Hutchins found her she was quite blue.

This was the only disagreement we had all summer: Aggie's refusing to speak to Tish that entire day. She said Mr. McDonald had seen her head and thought it was some sort of swimming animal, and had shot at her.

Mr. McDonald said afterward he knew her all the time, and was uncertain whether she was taking a cure for something or was trying to commit suicide. He said he spent a wretched morning. At five o'clock that evening we began to hear a curious tapping noise from the spy's island. It would last for a time, stop, and go on.

Hutchins said it was woodpeckers; but Tish looked at me significantly.

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"Wireless!" she said. "What did I tell you?"

That decided her next move, for that evening she put some tea and canned corn and a rubber blanket into the canoe; and in fear and trembling I went with her.