A singular instrument chipped out of flint, like three celts conjoined into one, so as to form a sort of tribrach, is said to have been found in the Isle of Wight. It is shown in Fig. 25A, kindly lent by the Society of Antiquaries.[295] In form it is of much the same character as some of the implements from Yucatan,[296] and from Vladimir,[297] Russia. It may be compared with some examples of strange forms from Honduras.[298] * * * * * I have already spoken of the method in which these and other allied forms of stone implements were manufactured; but, before quitting the subject of chipped or rough-hewn celts, I must devote a little space to the interesting discovery made by General Pitt Rivers, F.R.S., on the site of an ancient manufactory of flint implements, among which celts predominated, within the entrenchment known as Cissbury, near Worthing, where Colonel Ayre, R.A.,[299] found, some years ago, a very perfect flint celt. The entrenchment has now been proved to be of more recent date than the pits shortly to be mentioned. Accounts of the investigations of General Pitt Rivers and of some subsequently carried on by Mr. Ernest Willett are given in the _Archæologia_,[300] from which most of the following particulars are abstracted. Canon Greenwell, F.R.S., also assisted at a part of the exploration, and some of my illustrations are taken from specimens in his collection. The earthwork, of irregularly oval form, surrounds the summit of a chalk hill, near Worthing, in Sussex, on the western slope of which, within the rampart, are some fifty funnel or cup-shaped depressions, some of small size, but others about seventy feet in diameter and twelve feet in depth. At the base of these there seem to have been originally shafts |79| sunk into the chalk, and similar shafts have now been found beneath the rampart. Many of these were opened, and were found to contain, amongst the rubble with which they were partially filled, well-chipped celts and ruder implements, quantities of splinters and minute chippings of flint; flakes, some worked on one or both faces; some few boring-tools and scrapers; and many stones that had been used as hammers. Most of the flints had become quite white on the surface, as is often the case when they rest in a porous soil. Parts of antlers of red deer, remains of horse, goat, boar, and ox (_Bos longifrons_), oyster and a few other marine shells and snail-shells, as well as fragments of charcoal and rude pottery, were also found. At the base of one of the pits explored by Mr. Willett, galleries were found of precisely the same character as those at Grime’s Graves, near Brandon, and at Spiennes, near Mons, in Belgium, which I have already described, and it is evident that they were excavated for the purpose of procuring flint, to be chipped into the form of implements upon the spot. It does not appear certain that the portions of antler which were found had been used, as in