Page:Quarterly Journal of the Geological Society of London, vol. 32.djvu/337

Rh which has been observed in neolithic arrow-heads, intended to make the arrow revolve in its flight. It measures 3⋅8 by 1⋅42 inches. A fragment of a second specimen was also found corresponding with the upper part of fig. 7, and as nearly as possible of the same size and form as a specimen in the Oxford Museum from Wookey Hole. In all these implements the salient midrib of the flake has been left intact.

If this latter form (fig. 7) be compared with those figured in the 'Reliquiæ Aquitanicæ' from Périgord, it will be seen that it bears a strong family resemblance to some of those from Laugerie Haute (, pl. iv. figs. 7, 8, 9). They are also of the same type as those from the Pleistocene portion of the deposits at Solutré figured by MM. Ducrost and Lortet (Archives du Muséum d'Histoire Naturelle de Lyon, ii. pl. v.), and considered by M. de Mortillet to be characteristic of a stage in the Palæolithic culture.

Two other fragments of trimmed flakes were found, both with the salient ribs worked carefully off and the flat inferior surface intact.

In fig. 8 an implement is represented formed of a flake with the cutting-edge carefully and minutely chipped. The inferior surface is, for the most part, flat and unworked, while the superior is occupied by the natural surface of the flint-pebble. It is probably a scraper, analogous to that from Kent's Hole, fig. 392 of 'Ancient Stone Implements.'

Eleven flakes, with one of their extremities trimmed to a rounded edge, were met with. They are of the usual type so common in the caves of Périgord. One fragment is of the same form as the upper half of fig. 396 of 'Ancient Stone Implements,' and is composed of a flake struck from the outer side of a flint-pebble.

Figs. 9 and 10 represent two very singularly worn flakes like those which have been figured by Mr. Evans (figs. 398, 399, 400) from Kent's Hole. The first consists of a flake with "an oblique straight scraping edge, forming an obtuse angle with one side of the flake, and an