It has seemed to me that the time may have come when an inquiry directed strictly upon economic lines, and carefully following the English evidence, might strike a light of its own, in the strength of which the various side lights might perhaps be gathered together and some clear result obtained, at least as regards the main course of economic evolution in England. The English, like the Continental village community, as we have said, inhabited a shell--an open-field system--into the nooks and corners of which it was curiously bound and fitted, and from which it was apparently inseparable. The remains of this cast-off shell still survive in parishes where no Enclosure Act happens to have swept them away. The common or open field system can even now be studied on the ground within the township in which I am writing as well as in many others. Men are still living who have held and worked farms under its inconvenient rules, and who know the meaning of its terms and eccentric details. Making use of this circumstance the method pursued in this Essay will be, first, to become familiar with the little distinctive marks and traits of the English open-field system, so that they may be readily recognised wherever they present themselves; and then, proceeding from the known to the unknown, carefully to trace back the shell by searching and watching for its marks and traits as far into the past as evidence can be found. Using the knowledge so acquired about the shell as the key, the inquiry will turn upon its _occupant_. Examining how the mediæval English village community in serfdom fitted itself into the shell, and then again working back from the known to the unknown, it may be perhaps possible to discern whether, within historical times, it once had been free, or whether its serfdom was as old as the shell. The relation of the 'tribal system' in Wales, in Ireland, and in Germany to the open-field system, and so also to the village community, will be a necessary branch of the inquiry. It will embrace also both the German and the Roman sources of serfdom and of the manorial system of land management.