IT HAS BEEN ten years since I wrote the prefatory "Declaration" to this now enlarged and altered book. Not to my generation alone have many things receded during that decade. To the intelligent young as well as to the intelligent elderly, efforts in the present atmosphere to opiate the public with mere pictures of frontier enterprise have a ghastly unreality. The Texas Rangers have come to seem as remote as the Foreign Legion in France fighting against the Kaiser. Yet this Guide, extensively added to and revised, is mainly concerned, apart from the land and its native life, with frontier backgrounds. If during a decade a man does not change his mind on some things and develop new points of view, it is a pretty good sign that his mind is petrified and need no longer be accounted among the living. I have an inclination to rewrite the "Declaration," but maybe I was just as wise on some matters ten years ago as I am now; so I let it stand. Do I contradict myself? Very well then I contradict myself.