''"The sumptuous initials of this book are not more or less servile repetition of twelfth-century work ... the work of the scribe also is dazzling. He plays like a virtuoso with various sizes of script, the larger size having a majestic decorative quality. The contents are no less remarkable; the 'Martyrology of Óengus', the 'Acallam na Senórach' and a dindsenchus. The foliage pattern is probably inspired by foreign models, but is so completely integrated that the borrowing is only realised on second thoughts. The initials are large, bold, and drawn in firm lines and bright colours"''