Along Broadway at six o'clock a throng of pedestrians was stepping northward. A grayish day was settling into a gray evening, and a negative lack of color and elasticity had matured into a positive condition of atmospheric flatness. The air exhaled a limp and insipid moisture, like that given forth by a sponge newly steeped in an an sthetic. Upon the sombre fretwork of leafless trees, bare against red-brick buildings, drops of water hung trembling,...