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KNAPWELL, CAMBS.

According to geological literature the phosphatic nodules, known commercially as coprolites, were found in the Knapwell Clay pit 3 feet below the surface, but there was no mention of them being exploited. (T.Roberts, “Jurassic Rocks of Cambs.”p62,) In the Kimmeridge Clay south of the village, ”A short distance further I saw a quantity of clay which had been recently thrown out of a pond... containing numerous black phosphates of lime.” (Pennings and Jukes-Brown, 1881, p10)