From the late poet, an unrhymed alphabet in which every line suggests the drowsy time before dreamland: ``Jugglers have put aside their jiggling, jouncing balls'' or ``Waves wash over the shore with a hush, shush, shhh....Xebecs are slowly sailing in the Mediterranean mist.'' The subjects aren't exceptional, but Schwartz depicts them with precision and affection, including a gently rounded capital letter in each carefully structured illustration. Not a standout, but attractive and usable. (Picture book. 2-7)