it is only it is well known that the problem of gradients is it is of small importance to know whether at another, and again be suddenly at the
The region of the Cote in Burgundy offers a typical example. There we may clearly distinguish the old road of the Middle Ages, which passes at the highest level on the hillside and commands the country; a favourable position in times of general insecurity. Lower down are the roads used by the diligences, much wider and more regular. Still lower, and quite on the flat, are the railway and the national road which connect Dijon with Lyons.1 Three different possibilities were in turn utilized during three different epochs.