The Vercelli Book is one of the oldest of the Old English Poetic Codices, one of the others being the Junius manuscript, is one of the how many major codices of Old English literature?
Junius manuscript The Junius manuscript is one of the four major codices of Old English literature. Written in the 10th century, it contains poetry dealing with Biblical subjects in Old English, the vernacular language of Anglo-Saxon England. Modern editors have determined that the manuscript is made of four poems, to which they have given the titles "Genesis", "Exodus", "Daniel", and "Christ and Satan". The identity of their author is unknown. For a long time, scholars believed them to be the work of Cædmon, accordingly calling the book the Cædmon manuscript. This theory has been discarded due to the significant differences between the poems.
Prosimetrum A prosimetrum (plural prosimetra) is a poetic composition which exploits a combination of prose ("prosa") and verse ("metrum"); in particular, it is a text composed in alternating segments of prose and verse. It is widely found in Western and Eastern literature. While narrative "prosimetrum" may encompass at one extreme a prose story with occasional verse interspersed, and at the other, verse with occasional prose explanations, in true "prosimetrum" the two forms are represented in more equal measure. A distinction is sometimes drawn between texts in which verse is the dominant form and those in which prose dominates; there the terms "prosimetrum" and "versiprose" are applied respectively.