(1) _The Serf--his Position and Domestic Arrangements_ In the mediæval period, outside the small and scattered towns, the prevailing form of economic organisation was the manor. We have to imagine the surface of England dotted over with stretches of cultivated land, with areas of waste, moorland or woodland intervening. Each stretch of arable land was cultivated more or less in common by groups of serfs, who lived generally in one long village street, with the church and the lord's hall near at hand. Usually, in addition to the arable land worked on the complicated "three-field" system soon to be described, there were also hay-meadows down by the river, sometimes permanent pasture held in common, while the waste was available for extra pasturage, and for cutting turf and wood for fuel. Each serf possessed, besides, a small croft attached to his house, and sometimes an orchard and rude garden. The arable land was divided into three large fields, not shut in as are our fields by hedges, but lying open. Each field, again, was partitioned into numbers of strips more or less regular in shape, and each serf possessed a certain number of these, not, however, all lying together, but intermixed "mingle-mangle" with the holdings of his neighbours. He was not allowed to cultivate these, or indeed any of the land save his own tiny croft, as he pleased, but was compelled to follow the traditional method of farming according to the customs of his manor. Usually the rotation was wheat or rye in the first year, oats or barley in the second year, fallow in the third year, while the other two fields followed the same course a year and two years later; so that in each year one field was fallow, one grew wheat or rye, and the other oats or barley. The animals belonging to the serfs and their lord were pastured on the arable fields when the crops were taken off, and on the fallow field. The lord of the manor also possessed strips in the common fields, and was regarded as the owner of the common and waste, subject to the pasturage and fuel rights of the tenants. He did not receive rent quite as we understand it, but each serf owed him dues calculated in labour, in kind, and occasionally in money.