Green hay, not an obstreperous cow, started the great Chicago fire. Mrs. O'Leary's momentous milking is no myth, as much so as William Tell and the apple, an Cleopatra and her fas cination. And another great disillu sionizer has appeared, one who dis solves the fables im corrosive sublimate quite as conclusively as does Guglial mo Ferrero or say German higher critic. The new historian is “Big