Abstract
The fragment of silicified tree stem identified in the preceding paper by Mr. W. N. Edwards as a Dadoxylon from the Upper Carboniferous of Warwickshire was found in the gravel pit at Tiptree Heath just west of the King's Arms. This pit is at 269 feet above sea-level on the summit of the ridge that runs from Wickham Bishop, towards Colchester. The gravel is part of an extensive sheet which is shown on the Geological Survey Map (sheet 47) as Glacial Gravel. Dr. A. E. Salter (Proc. Geol. Soc., xix. 1905, p. 31) recorded from this pit Bunter debris, sarsens, radiolarian chert, rhyolite, and the green ash associated with it, and Carboniferous chert, with crinoids.
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