Introspection suggests that both writers and readers experience auditory imagery of intonation, accents, and hesitations. The suggestion here is that certain important aspects of this “covert prosody” of written language are reflected in punctuation. In order to study systematically the degree to which punctuation reflects the covert prosody of written language, one would like to find independent ways of uncovering that prosody. Two such ways are explored here: reading aloud and “repunctuating” (inserting punctuation in passages from which the author's punctuation has been removed). The article focuses especially on the relation between “punctuation units” (stretches of language between punctuation marks) and the “intonation units” of speech, and the variations in this relation that are found among different authors and different styles. It explores the degree to which different pieces of writing are prosodically spokenlike, and the degree to which they capture the prosodic imagery of ordinary readers. “Close” and “open” punctuation are discussed, as are selected grammatical sites at which there is a discrepancy between punctuation and prosody. It is suggested that an awareness of prosodic imagery is an important ingredient of “good writing.”