ing the occupation of this country to have been continuous, into Neolithic times the transition from one stage of civilization to the other has still to be traced. Under any circumstances, we have as yet, in Britain, no means at command for assigning with certainty any of these roughly-chipped forms to an antiquity more remote than that of the carefully finished celts with their edges sharpened by grinding, though in all probability some of them must date back to a far remoter period.
We have, on the contrary, good evidence that whatever may have been the date when the roughly-chipped implements of this form were first manufactured, they continued to be chipped out in much the same manner at a time when the practice of sharpening by grinding was well known. Though some may have been used without being ground, they bear, for the most part, the same relation to the finished forms, as the blade of steel rough from the forge bears to the polished knife.
