Age of Sub-Crag Implements

Abstract

MR. J. REID MOIR has recently directed attention to an interesting series of worked flints found beneath the Red Crag, exhibited at present in the British Museum¹. Adhering to one of these flints is some ferruginous sandy material which Mr. Moir regards as Diestian, since it resembles the sandstone of which the well-known Suffolk Boxstones are composed. Thanks to the courtesy of Mr. Reginald Smith, I have had an opportunity of examining this specimen. The encrusting material is an iron-cemented sand which appears to me to bear a stronger resemblance to Red Crag sand than to Boxstone material. The quantity of sand is too small to permit mineralogical analysis ; moreover, such a process would destroy the evidence. Even if it were proved to be Boxstone detritus, the possibility of its having been re-deposited in Red Crag times would have to be seriously considered.