ENCLOSURES: ESSEX AGRICULTURE, 1500-1900. 9 land. Unless otherwise stated the following account will relate only to the former type of enclosure. Some idea of the nature and extent of enclosures may be obtained from a consideration of the known enclosures prior to 1400. The few instances that have been found have been gathered from several sources. With only three exceptions the sites of these enclosures are within the central area of the County where the field systems appear to be varied in origin. The type of agriculture obtaining in the enclosed land is worthy of comment. In many instances this is given, and in the remaining cases it seems possible to make an assumption from a consideration of the acreage involved. For example, it is assumed that several hundred acres (as in Tiptree) would be enclosed for pastoral farming, whilst the enclosure of a messuage of six acres (in Great Waltham) would, in all pro- bability, be enclosed for arable farming.12 Some localisation is apparent from the distribution thus obtained, since the majority of the enclosures are found within the two central areas. The land enclosed for pastoral farming is chiefly in the east and west of the central areas—mainly upon the London Clay, while the Boulder Clay country shows a predominance of arable enclosures. The east, west and south of the County do not figure pro- minently in this distribution, and since the former two districts were still unenclosed in much later periods, we may assume that they were largely unenclosed in mediaeval times. The history of the southern area is more obscure. Neither at this time nor in later periods does this region appear unenclosed, and, since it seems impossible that such an extensive area should be enclosed without mention during the more recent centuries, we may reasonably conclude that this Romano-British area had been enclosed during the preceding, earlier mediaeval period. Thus, at the beginning of the sixteenth century the north- east, north-west and south-west remained largely unenclosed, the south was probably almost entirely enclosed, whilst central Essex was being rapidly enclosed. Only on this assumption can Tusser's statement gain credence. It remains for us to consider the effect of these activities on the settlement of the 12 This suggestion gains some support from the size of the holdings of the time. They arely ran into three figures, and enclosures of this extent suggest enclosures of pastoral land.