The contents, as summed up by Frere, are: f. 2v: Alleluias; f. 10: lesser Tro and processional antiphons; f. 55: Kyrie and Gloria Tro; f. 70: a Tonary; f. 73: Sanctus and Agnus Tro; f. 81: textless sequences (the word 'sequence' will be used in this sense for the present source); f. 89: proses; f. 135: organal parts for Kyrie and Gloria Tro; f. 143: organal parts for Tracts; f. 153: organal parts for sequences; f. 163: organa for Alleluias; f. 175: organa for responds. Organal parts are written separately from the plainsong.
NB -- DIAMM ONLY SHOWS A PARTIAL INVENTORY FOR THIS SOURCE AS IT DOES NOT INCLUDE POLYPHONY. Susan Rankin's full inventory is available as a pdf on the Resources page, linked also from the 'external URLs' list above or here; the index of the chants (pdf) is here.