=C.=--The third division is one for which we have little direct, but plenty of indirect, evidence, and the remains of which are with us upon every side. It is the growth in the Early Middle Ages, presumably from about the Angevin period, of the mediaeval road system which was the deflection and extension of the old Roman road system. At the end of the Empire, during the Dark Ages (_i.e._ from the fifth to the eleventh century), though the Roman road system had remained the only available one, it had decayed, and numerous modifications of it had already appeared; but with the Early Middle Ages those modifications seem to have grown prodigiously, and the indirect network of local roads would then seem to have arisen. =D.=--The fourth chapter is even more obscure. It is a partial decline, only affecting certain districts, and affecting some much more than others: a decline which corresponds more or less to the end of the sixteenth and the beginning of the seventeenth century. It went with the flooding of the fen lands, with the breakdown of central authority, the increase of local interests, and so on. =E.=--The fifth chapter is the great revolution in road planning and construction which may be called the turnpike era: beginning early in the eighteenth century and flourishing at its close. The turnpike system continued to develop with continual changes through three or four generations. It survived the competition of the railroads. It was vastly improved by the new local legislation of from forty to twenty years ago. It left us with the road system we now enjoy, which must, under the pressure of quite recent changes, be modified if our communications are to be saved, or, at any rate, to keep pace with the present conditions of travel. CHAPTER X THE TRACKWAYS _The Three Divisions of the British Pre-Roman Road System--The System of which Salisbury Plain was the “Hub”: The System Connected with London: Cross-Country Communications--The Three Factors which Have Determined Travel in Britain._ i The origin of the trackways is, of course, unknown, and can only be guessed at by inference; but their character, and especially the geographical causes which determined their trace, we can establish on the largest lines with some accuracy. We must not lose ourselves in that kind of speculation which has been so dear to the academies, and which is usually very futile. As to the order in which the development took place we have no evidence whatever: for instance, as to the date of the founding of London, or of its size before the Roman occupation; nor have we similar evidence with regard to any of the centres of England for the uniting of which roads would arise. But we have relics of the trackways before us. We have the geographical conditions almost unchanged, and we have the indication of Roman roads clearly based upon particular existing trackways, and therefore suggesting what the scheme was before the Roman engineers set to work.