The consciousness that political and scientific construction has been rather hasty in its work, that it has often been based upon doctrines instead of building on the firm foundation of facts--the widely spread perception of these defects has been of late inciting statesmen and thinkers to put to use some of those very elements which were formerly ignored or rejected. The manorial School--if I may be allowed to use this expression--has brought forward the influence of great landed estates against the democratical conception of the village community. The work spent upon this last phenomenon is by no means undone; on the contrary, it was received in most of its parts. But new material was found in the manorial documents of the later middle ages, the method of investigation 'from the known to the unknown' was used both openly and unconsciously, comparative inquiry was handled for more definite, even if more limited purposes. Great results cannot be contested: to name one--the organising force of aristocratic property has been acknowledged and has come to its rights. But the new impetus given to research has caused its originators to overleap themselves, as it were. They have occupied so exclusively the point of view whence the manor of the later middle ages is visible that they have disregarded the evidence which comes from other quarters instead of finding an explanation which will satisfy all the facts. The investigation 'from the known to the unknown' has its definite danger, against which one has to be constantly on one's guard: its obvious danger is to destroy perspective and ignore development by carrying into the 'unknown' of early times that which is known of later conditions. Altogether the attempt to overthrow some of the established results of investigation as to race and classes does not seem to be a happy one. And so, although great work has been done in our field of study, it cannot be said that it has been brought to a close--'bis an die Sterne weit.' Many things remain to be done, and some problems are especially pressing. The legal and the economical side of the inquiry must be worked up to the same level; manorial documents must be examined systematically, if not exhaustively, and their material made to fit with the evidence established from other sources of information; the whole field has to be gone over with an eye for proof and not for doctrine. A review of the work already done, and of the names of scholars engaged in it, is certainly an incitement to modesty for every new reaper in the field, but it is also a source of hope. It shows that schools and leading scholars displace one another more under the influence of general currents of thought than of individual talent. The ferment towards the formation of groups comes from the outside, from the modern life which surrounds research, forms the scholar, suggests solutions. Moreover, theoretical development has a continuity of its own; all the