In the County of Herts., gravel is worked for road metal in many places, and in 1915, when staying at Harpenden, I was able to give some attention to a spot not far from that place, already known to me from descriptions in Evans' “Stone Implements,” and Worthington Smith's “Primeval Man,” viz., No Man's Common.

This common extends over the face of a shallow valley, now dry, which as Sir J. Evans (“Ancient Stone Implements,” p. 602) remarks, was formerly the course of a stream, either the Lea itself or one of its branches. Two sections have been opened at this spot, one superficial, the other deep and extensive. It is from the latter—from which an immense amount of gravel has been removed—that I obtained the implements described in this paper. The common lies about a mile south of Wheathampstead.