ENCLOSURES : ESSEX AGRICULTURE, 1500-1900. 19 suggest that these commons were enclosed for arable farming21 at a time when such a project was financially sound. Today, at a time when wheat prices are not high, the former commons have become grasslands. It will be noticed from the maps of the time that few of the commons of the London Clay, remaining unenclosed in 1775, had become enclosed by the time of the middle years of the nineteenth century. The extreme poorness of the soil of the areas, which militated against their enclosure for pastoral farming, naturally proved still more inimical to their enclosure for arable farming. Some further indication, however, of the progress of arable farming within the differing soil areas of the County may be obtained from the tithe maps of the time. These maps, drawn up in the late, thirties, show the fields that were devoted to pastoral and arable farming respectively. Three examples of parish tithe maps suffice to show the conditions within the three main soil regions of South-East Essex in 1840. It is apparent that, whilst all these parishes were extensively devoted to arable farming, certain differences existed between them. Great Wigborough—a typical London Clay parish—was, with the exception of the coastal marsh, almost entirely arable land, whilst Shalford on the Boulder Clay had more pasture land. It appears that the enclosure of the commons of the London Clay area, occurring during the pre- ceding centuries, allowed a greater area of land to be under crops when compared with the parishes on the Boulder Clay. An inspection of one of the latter parishes (e.g. Shalford) suggests the prevalence of a tendency already noticed—the rapid en- closure of commons, and their conversion to arable land. Shal- ford showed several fields as arable that in later years (1933) reverted to pasture, but a few fields showed an opposite tendency. It is not unreasonable to suggest that the latter (usually un- enclosed rough pasture in 1840) were enclosed and converted to arable farming a few years later owing to the continued high wheat prices. The London Clay area must have had an initial advantage since its commons were already enclosed. The sandy soil parishes, such as Asheldam, showed a percentage of land under 21 e.g, Paternoster Heath—now grassland—was enclosed for arable farming in the first decade of the nineteenth century.