Both part of that afternoon and part of Sunday he was engaged in taking some measurements near the Ridges Reservoir, North Shields, afterwards going on to Tynemouth again, and snap-shotting the castle from various positions, the railway and its tunnels, the various slips, the jetty, the fish quay, the harbour, and the Narrows. Indeed, he seemed to be making a most careful photographic survey of the whole town. He carried with him a memorandum book, in which he made many notes. All this he did openly, in full presence of passers-by, and even of the police, for who suspects German spies in Tynemouth? About six o'clock on Sunday afternoon he entered the Royal Station Hotel, took off his light overcoat, and, hanging it in the hall, went into the coffee-room to order tea. I had followed him in order to have tea myself, and I took off my own overcoat and hung it up next to his. But I did not enter the coffee-room; instead, I went into the smoking-room. There I called for a drink, and, having swallowed it, returned to the pegs where our coats were hanging. Swiftly I placed my hand in the breast pocket of his coat, and there felt some papers which, in a second, I had seized and transferred to my own pocket. Then I put on my coat leisurely, and strolled across to the station. [Illustration: MAP OF THE NORTH SHIELDS RESERVOIRS, AND HOW TO CUT OFF THE WATER SUPPLY, PREPARED BY THE SPY JOHN BARKER.] A train was fortunately just about to leave for Newcastle, and I jumped in. Then when we had moved away from the platform I eagerly examined what I had secured. It consisted of a tipster's circular, some newspaper cuttings concerning football, a rough sketch of how the water supply of North Shields could be cut off, and a private letter from a business man which may be of interest if I reproduce it. It read as follows: "Berkeley Chambers, "Cannon Street, "London, E.C., "_May 3rd_, 1908. "MY DEAR JOHN, "I herewith enclose the interest in advance--four five-pound notes. "Continue to act as you have done, and obtain orders wherever possible. "Business just now, I am glad to say, leaves but little to be desired, and we hope that next year your share of profits may be increased. "We have every confidence in this, you understand. "Write to us oftener and give us news of your doings, as we are always interested in your welfare. "It is unwise of you, I think, to doubt Uncle Charles, for I have always found him to be a man in whom one can repose the utmost confidence. He is, I believe, taking a house near Tynemouth. "Every one is at present well, but the spring in London is always trying. However, we are hoping for warmer weather. "My wife and the children, especially little Charlie, Frederick, and Charlotte--who is growing quite a big girl--send their love to you.