8vo, black full cloth over chartreuse cloth spine, silver titles, 305pp. First American Edition, stated First printing. Dust jacket price clipped with stamped price of 3.00 to front flap, sunned to spine with moderate rubbing to panels, short closed tear to front panel at front flap edge. Contents clean, binding firm. Yeats describes his mystical and creative science and poetic symbology, with illustrated plates and drawings. Frontispiece etching by Augustus John. Issued jointly by Macmillan the same year in the US and UK, the American edition is rather scarce. A handsome copy in mylar.