On a day about mid-year in 1855, the conventional literary world was startled into indecorous behavior by the unannounced appearance of a thin quarto sheaf of poems, in form and in tone unlike anything of precedent issue. It was called Leaves of Grass, and there were but twelve poems in the volume. No author's name appeared upon the title page, the separate poems bore no captions, there was no imprint of publisher. A steel engraving of a man presumably...