Such being the causes of perplexity, it is perhaps surprising that in the thirteenth century when we begin to obtain a large stock of manorial extents, ‘the hide’ should still exhibit some uniformity. But, unless we have been misled by a partial induction, a tendency to reckon 120 rather than any other number of acres to the hide is plainly perceptible. The following are the equations that prevailed on the manors of Ramsey Abbey, which were scattered in the eastern midlands[1322].
Here in thirty-one instances what we take to be the normal equation appears but seven times, but no other equation occurs more than twice. Moreover, so far as we have observed, the variations in the acreage that will be ascribed to a hide are not provincial, they are villar variations: that is to say, though we may see that the average hide of one county would have more acres than those that are contained in the average hide of another, we can not affirm that the hide of a certain county or hundred contains a acres, while that of another has b acres, and, on the other hand, we often see a startling difference between two contiguous villages. Lastly, where the computation of 120 acres to a hide is forsaken, we see little agreement in favour of any other equation. In particular, though now and again the hide of a village will perchance have 240 acres, we can find no trace of any ‘double hide’ in which ingenuity might see a link between the Roman and English systems of measurement and taxation[1323]. The only other general proposition which our evidence suggests is that a land which habitually displays unusually large virgates will often be a land in which a given area of arable soil has borne an unusually light weight of taxation, and this, as we shall hereafter see, will often, though not always, be a land where a given area of arable soil has been deemed to bear an unusually small value. But this connexion between many-acred hides and light taxation is not very strongly marked in our cartularies[1324].
The carucate and bovate.
In the land-books which deal with Kent the aratrum or sulung[1325] is commoner than the hide or manse, and Domesday Book shows us that in Kent the solin (sulung) is the fiscal unit that plays the part that is elsewhere played by the hide. That same part is played in Suffolk, Norfolk, Yorkshire, Lincolnshire, and the counties of Derby, Nottingham and Leicester by the carucata, which has for its eighth part the bovata. These terms seem to be French: that is to say, they apparently formed no part of the official Latin that had been current in England[1326]. We may infer, however, that they translated some English, or rather perhaps some Scandinavian terms, for only in Danish counties do we find them used to describe the geldable units. It is exceedingly doubtful whether we ought to treat this method of reckoning as older than the Danish invasions. Bede, himself a Northumbrian, uses the ‘family-land’ as his unit, no matter what be the part of England of which he is speaking, and his translator uses the híd or hiwisc in the same indiscriminate fashion. Unfortunately the ‘carucated’ shires are those which yield us hardly any land-books, and we do not know what the English jurors said when the Norman clerks wrote carucata and bovata: perhaps plough-gate and ox-gate, or plough-gang and ox-gang, or, again, a plough of land, for these were the vernacular words of a later age. On the whole, the little evidence that we have seems to point to the greater antiquity in England of a reckoning which takes the ‘house-land’ rather than the ‘plough-land’ as its unit[1327].
The ox-gang.
As to the bovate or ox-gang, it seems to be an unit only in the same sense as that in which the virgate or yard-land is an unit; the one is the eighth, the other is the fourth of an unit. That, in days when eight oxen are yoked to a plough, the eighth of a plough-gang should be called an ox-gang will not surprise us, though, as a matter of fact, an ox never ‘goes’ or ploughs in solitude[1328]. In our Latin documents a third part of a knight’s fee will be, not tertia pars feodi unius militis, but far more commonly, feodum tertiae partis unius militis. We do not infer from this that fractions of knights, or fractions of knight’s fees are older than integral knights and integral fees. The bovate seems to have been much less widely known than the carucate, for apparently it had no place in the computation that was generally used in East Anglia, where men reckoned by carucates, half-carucates and acres and where the virgate was not absolutely unknown[1329].
The fiscal carucate.
In the financial system, as we have said, the carucate plays for some counties the part that is played for others by the hide. Fiscally they seem to be equivalent: that is to say, when every hide of Wessex is to pay two shillings, every carucate of Lincolnshire will pay that sum. We think also and shall try to show that the Exchequer reckons 120 acres to the carucate, or, in other words, that if a tenement taxed as a carucate were divided into six equal shares, each share would at the Exchequer be called 20 acres. The same forces, however, which have made the fiscal hide diverge widely from the ‘real’ hide have played upon the plough-gangs of the Danelaw. In the Boldon Book we read of many bovates with 15 acres apiece, though the figures 20, 131⁄2, 121⁄2, 12 and 8 are also represented, and, when we come to the extents of the thirteenth century, we seem to see in the north but a feeble tendency to any uniformity among the equations that connect carucates with acres. The numbers of the acres in a bovate given by a series of Yorkshire inquests is 7, 7, 8, 15, 12, 6, 12, 15, 15, 6, 5, 9, 10, 10, 12, 24, 4, 16, 12, 18, 8, 6, 10, 24, 32[1330]. With a bovate of 4 acres, our carucate would have no more than 32. But then, in the north we may find very long rods and very large acres[1331], and, where Danes have settled, we have the best reason to expect those complications which would arise from the superimposition of a new set of measures upon a territory that had been arranged to suit another set[1332].
Acreage tilled by a plough.