The inferences to be drawn from such a comparison are of considerable value in the indications they afford of the domestic habits and social life of a race, the last survivor of which has mouldered underneath his green tumulus, perchance for centuries before the era of our earliest authentic chronicles. As a means of comparison this characteristic appearance of the teeth manifestly furnishes one means of discriminating between an early and a still earlier, if not primeval period, and though not in itself conclusive, it may be found of considerable value when taken in connexion with the other and still more obvious peculiarities of the crania of the earliest barrows. We perceive from it, at least, that a very decided change took place in the common food of the country, from the period when the native Briton of the primeval period pursued the chase with the flint lance and arrow, and the spear of deer's horn, to that comparatively recent period when the Saxon marauders began to effect settlements and build houses on the scenes where they had ravaged the villages of the older British natives. The first class, we may infer, attempted little cultivation of the soil. Improving on the precarious chances of a mere nomadic or hunter life, we have been led to suppose, from other evidence, that the early Briton introduced the rudiments of a pastoral life, while yet his dwelling was only the slight circular earth-pit, in-covered with overhanging boughs and skins. To the spoils of the chase he would then add the milk of his flock of goats or sheep, probably with no other addition than such wild esculents, mast, or fruits, as might be gathered without labour in the glades of the neighbouring forest. But the social state in the British Isles was a progressive one. Whether by the gradual improvement of the aboriginal race, or by the incursion of foreign tribes already familiar with the fruits of agricultural labour, the wild pastoral or hunter life of the first settlers was exchanged for one more suited to call forth the social virtues. The increase of the population, whether by the ingress of such new tribes, or by the numerical progression of the first settlers, would of itself put an end to the possibility of finding subsistence by means of the chase. Thus it might be from the inventive industry which privations force into activity that new wants were first discovered, new tastes were created, and satisfied by the annual harvests of golden grain. The ploughshare and the pruning-hook divided attention with the sword and the spear, which they could not supplant; and the ingenious agriculturist devised his oaken querne, his stone-rubber, or corn-crusher, and at length his simple yet effective hand-mill, which resisted, during many centuries of change and progress, all attempts to supersede it by more complicated machinery. Dr. Pettigrew, in communicating the results of a series of observations