218 MINERAL WATERS AND MEDICINAL SPRINGS OF ESSEX. but there is no spring or running well there now. While this may very well have been the site, there is another well still nearer to the nine-mile stone—namely, in the middle of a meadow belonging to Mr. Buxton and adjoining the present cricket ground. For our knowledge of it, we are indebted to Mr., B. G. Cole, who has been kind enough to make many enquiries on the spot. The well in question (fig. 4) is about two hundred yards to the east of the road and is furnished with a pump. It is a dug well about 4 feet in diameter, bricked round with small bricks which look (as far as one can see) very old. When Mr. Christy visited it in company with the Messrs. Cole on the 13th November 1907, there was 4ft. 3ins, of water in it and the surface of the water was 6ft. below the surface of the ground. A sample of the water brought up yielded the following results :— There appears to be nothing to justify the opinion that this water has medicinal properties. The trace of iron is not sufficient even to impart a chalybeate taste, Mr. Dalton writes that the water in question comes, doubt- less, from the base of one of the several patches of Glacial Gravel capping the ridge of London Clay between the Roding and the Ching. (11.)—The West Tilbury Wells.—About fifteen years after the publication (in 1711) of Allen's second work, there was dis- covered at West Tilbury, on the north bank of the Thames, a medicinal well which afterwards became famous—more so than any other of our Essex wells. It retained its fame, too, for a longer period than any other Essex well. It appears, indeed, to have been the only one the water of which ever had a real and enduring commercial value. Its history is related very