The existence of dipodic structure in English verse has been recognised by metrists only within a comparatively recent period of time. There have undoubtedly been two principal reasons for this failure of theory to take into account a very old and very deep-seated characteristic of English verse. Dipodic structure was, on the one hand, until the last forty years confined almost entirely to popular verse, while its sporadic occurrences in literary poetry were usually of such half-hearted nature as easily to escape the attention of the formal metrist. On the other hand, the study of dipodic verse has been handicapped by the lack of an objective method which could translate unsupported subjective feeling into scientific metrical proof. An attempt toward the establishment of such a method for the simplest form of dipodic verse is the object of this study.