In the first place, ancient Welsh ploughing was evidently not like the classical ploughing of the sunny south, a mere scratching of the ground with a light plough, which one or two horses or oxen could draw. In the Welsh laws a team of eight oxen, as already said, is assumed to be necessary. And hence the necessity of co-operative ploughing. The plough was evidently heavy and the ploughing deep, just as was the case in [p123] the twelfth century, and probably from still earlier to quite modern times in Scotland, where, as we have seen, the plough was of the same heavy kind, and the team of eight or of twelve oxen. And it is curious to observe that the Welsh, like the Scotch oxen in modern times, were driven four abreast, _i.e._ yoked four to a yoke. So that, as already suggested, the plough was aptly described by the monks in their mediæval Latin as a 'caruca,' and the ploughed land as a 'carucate.' «and the strips go with the oxen.» But the most interesting point about the ancient Welsh co-operative ploughing was the fact that the key to a share in the produce was the contribution of one or more oxen to the team. He who contributed one ox was entitled to one erw in the twelve. He who contributed two oxen was entitled to two erws. He who contributed a whole yoke of four oxen would receive four erws, while only the _owner_ of the full team of eight oxen could possibly do without the co-operation of others in ploughing. Surely this Welsh evidence satisfactorily verifies the hypothesis already suggested by the term _bovate_, and by the allotment of two oxen as outfit to the yard-land or virgate, and by the taking of tithes in the shape of every tenth strip as it was traversed by the plough, and lastly by the order of rotation in the strips disclosed by the Winslow example. It explains how the possession of the oxen came to be in Saxon, as probably in still earlier British or Roman times, the key to the position of the holder, and his rank in the hierarchy of the village community. And it points to the Saxon system of hides and yard-lands having possibly sprung naturally out [p124] of pre-existing British or Roman arrangements, rather than as having been a purely Saxon importation. «Hence the yard-land became a bundle of scattered strips.» It also suggests a ready explanation of how when the common tillage died out, and the strips included in a hide, yard-land, or virgate, instead of varying with each year's arrangements of the plough teams, became occupied by the villein tenant year after year in permanent possession, there would naturally be left, as a survival of the ancient system, that now meaningless and inconvenient scattering of the strips forming a holding all over the open fields which in modern times so incensed Arthur Young, and made the Enclosure Acts necessary. «The strip the day's ploughing.»