THE MEANING OF TREASON (307 pp.)Rebecca WestViking ($3.50).
When, in 1936, General Emilio Mola announced that he would capture Madrid because he had four columns outside the city and a fifth column of sympathizers within, the world pounced on the phrase with the eagerness of a man who has been groping for an important word. The world might better have been stunned as by a tocsin of calamity. For what Mola had done was to indicate the dimension of treason in our time.
Other ages have had their individual traitorsmen who from...