XL] WALL-MAP OF AGRIPPA. 237
stations along them, with the number of miles that separated
one station from another. Of the former of these mention is
made at a later period by Vegetius in his treatise On the Art of
War^ where he is speaking of the importance to a general of
acquaintance with the country through which he is marching, in
order to prevent surprise and to be on his guard against ambush.
The circumspect commanders of former days, he remarks, are
said to have had itineraries of the provinces which were the scene
of their campaigns, not only set down in writing, but also painted;
and he goes on to recommend that these should be sufficiently
detailed to include the short cuts, the by-ways, the mountains and
the rivers1. Of this class of documents we are fortunate in
possessing a specimen in the Peutinger Table; while the other
class, or Itineraria adnotata, is represented by the Antonine
Itinerary.
1 Veget., Da Re Militari, 3. 6.