The Howard Psalter is preceded by a collection of theological diagrams excerpted from several sources and known as the Speculum theologie, probably compiled by Johannes Metensis (John of Metz), a Franciscan preacher and follower of Bonaventura, active in Paris around 1273, and a calendar inserte...
Calendar and prefatory cycle of miniatures and diagrams (the 'De Lisle Psalter')
Scope & Content:
The 'De Lisle Psalter' includes: ff. 117r-122v: Calendar, use of Sarum. ff. 123r-135: Prefatory material including the Speculum theologie, a collection of theological diagrams excerpted from several sources, probably compiled by Johannes Metensis (John of Metz), a Franciscan preacher and foll...