Before leaving the subject of the _sulung_, one should mention perhaps that it was divided (as Mr Seebohm has explained) into four quarters known as _juga_, just as the hide was divided into four virgates. Mr Seebohm bases this statement on Anglo-Saxon evidence,[199] but it is abundantly confirmed by Domesday, where we read of Eastwell (in Kent): 'pro uno solin se defendit. Tria juga sunt infra divisionem Hugonis, et quartum jugum est extra' (i. 13). So far all is clear; but Professor Vinogradoff, on the contrary, asserts that 'the yokes (_juga_) of Battle Abbey (in Kent) are not virgates, but carucates, full ploughlands' (p. 225). This assertion is based on a very natural misapprehension. In the Battle Manor of Wye (Kent) we find that the _jugum_ itself was divided into four quarters, called 'virgates' which were each, consequently, the sixteenth, not, as in the hidated district, the fourth of a ploughland. Professor Vinogradoff, naturally assuming that the 'virgate' meant the same here as elsewhere, inferred that four 'virgates' (that is, a _jugum_) must constitute a full ploughland. But this change of denotation goes further still. The Battle Cartulary records yet another 'virgate', namely, the fourth (not of a ploughland, but) of an acre! This led me, on its publication, to wonder whether we have here the clue to the origin of the somewhat mysterious term 'virgate'. Starting from the acre, we should have in the _virgata_ (rood) its quarter, with a name derived from the _virga_ (rod) which formed its base in mensuration. The sense of 'quarter' once established, it might be transferred to the quarter of a _jugum_, or the quarter of a hide. This is a suggestion which, of course, I advance with all diffidence, but which would solve an otherwise insoluble problem. The relation of the bovate to the carucate, and of the _jugum_ to the _sulung_, are both so obviously based upon the unit of the plough-team that they raise no difficulty. But the term 'virgate' does not, like them, speak for itself. If we might take it to denote merely a 'quarter' of the hide, it would become a term of relation only, leaving the 'hide' as the original unit. Should this suggestion meet with acceptance, it might obviously lead to rather important results. Mr Elton, in his well-known _Tenures of Kent_, attaches considerable importance to a list, 'De Suylingis Comitatus Kanciæ et qui eas tenent', in the Cottonian MS., Claud. C. IV, which he placed little subsequent to Domesday. Having transcribed it for collation with the Survey, I came to the conclusion that it was not sufficiently trustworthy for publication, for the names, in my opinion, involve some anachronism. The feature of the list is that it shows us as tenants-in-chief, the leading tenants of Bishop Odo; and the change of most interest to genealogists is the succession of Patrick 'de Caurcio' to the holding of Ernulf de Hesdin. XIV. THE 'FIRMA UNIUS NOCTIS'