4 THE ESSEX NATURALIST. It requires little imagination to realise that the difficulties attendant upon land enclosure in the three field-system are formidable. The buying out of individuals' holdings was of little use, and force, the only practical method, was not always advisable. Slater3 noticed the similarity between the west of Britain and the eastern Home Counties in respect of the early date of enslosure, for very few enclosures had taken place in either of these districts during the Parliamentary Enclosures of the nineteenth century, and he suggests that in the former, or Celtic, area early enclosures obtained favoured by the compact holdings of the run-rig and other British field systems. It is obvious that the open field system with its scattered areas, associated with the areas of Saxon settlement, would involve difficulties in the re-allocation of owners' strips during enclosure. In the Celtic field systems, where each cultivator was allowed to have a compact area for some time, there would be every in- ducement to fence the holding for its improvement. Slater's reasons for the early date of the enclosures in eastern England are ingenious but unconvincing. It was, of course, a desirable action on the part of the manorial lord to enclose land for arable or pastoral farming—a procedure usually causing some outcry on the part of the tenants who lost grazing and other rights. Slater therefore suggests that the English en- closures began in the more highly cultivated land in the east of the country—where new agricultural ideas would easily take root—and advanced westward. As the advancing wave of enclosures reached London the agitation of the ejected and suffering tenants caused parliamentary action against this "pull- ing down of towns." This theory, put forward to explain the early enclosures in eastern England, seems untenable. The zone of enclosures could hardly be expected to show such an even line of advance, or such a definitely marked boundary at the time when new enclosures were made illegal. Furthermore, it is known that the men who formulated the parliamentary acts were those who were most interested in enclosures, and these men left many ways by which they could evade the letter of the law—and, indeed, enclosures did not cease in spite of parlia- mentary action. 3 Geographical Journal, 1907. Slater.