Corpus Christi College, University of Cambridge
It is through these small, but vitally important, scribal 'markings' that we can be assured that the manuscript was actually in use. If scholars in the 14th and 15th centuries did not read and know the contents of the manuscript, they would not be bothered to take the time to correct it in the manner which I found in this manuscript. This also means that there must have been multiple copies of the manuscript from which the corrections could be made. Although many of the manuscripts of Odington's De speculatione musica were destroyed, it is amazing how much one can glean from the smallest little traces of activity and ultimately reconstruct a tree of dead manuscripts.