Descriptio KambriaeRetractationesCatalogus breuior librorum suorum
De iure et statu Meneuensis ecclesiaeVerses
Verses from the windows in the choir of Canterbury Cathedral
MS 400 is formed from four manuscripts, the first three of which contain tracts by Gerald of Wales (11461226). They contain an early thirteenth-century second edition of his Topographia Hiberniae with additions from the third edition; a highly flawed sixteenth-century copy of the Descriptio Kambriae; and early thirteenth-century copies of Retractationes, Catalogus brevior librorum suorum, De iure et statu Meneuensis ecclesiae, and Verses. The latter two texts in particular are good versions. The final pages of the manuscript contain a late thirteenth-century copy of the verses from the windows in the choir of Canterbury Cathedral which M. R. James identified as the source for the copy on a roll held by the Dean and Chapter of Canterbury.