Note 116 — J. E. MARR, M.A., F.R.S. (continued 5)

Concerning this matter, the reader should consult Prof. Boyd Dawkins' Early Man in Britain. Sir J. Prestwich has argued in favour of the existence of a group of implements found on the plateau south of the Thames of an age antecedent to that of the ordinary river-drift implements. See Quart. Journ. Geol. Soc., vol. XLV. p. 270.