• Puzzle initial 'M'(inuciaru[m]) with pen-flourishing developing into a 'J-border', at the beginning of a treatise on vulgar fractions attributed to Johannes Anglicus., Various calendarial and computistical treatises

the foundation collections of the British Library. Puzzle initial Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of a puzzle initial 'M'(inuciaru[m]) with pen-flourishing developing into a 'J-border', at the beginning of a treatise on vulgar fractions attributed to Robertus Anglicus., Various calendarial and computistical treatises

the foundation collections of the British Library. Puzzle initial Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of an illuminated initial 'G'(eometrie), at the beginning of Robertus Anglicus' Tractatus quadrantis veteris., Various calendarial and computistical treatises

the foundation collections of the British Library. Illuminated initial Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Drawing of a quadrant, illustrating Robertus Anglicus' Tractatus quadrantis veteris., Various calendarial and computistical treatises

foundation collections of the British Library. Drawing and tables Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Illuminated initial 'D'(icto) in Robertus Anglicus' Tractatus quadrantis veteris., Various calendarial and computistical treatises

the foundation collections of the British Library. Illuminated initial Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Drawings and diagrams illustrating Robertus Anglicus' Tractatus quadrantis veteris. Added drawing of tower in the margin (?15th century)., Various calendarial and computistical treatises

of the foundation collections of the British Library. Drawings Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Drawings and diagrams at the end of Robertus Anglicus' Tractatus quadrantis veteris., Various calendarial and computistical treatises

of the foundation collections of the British Library. Drawings Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Table in Robertus Anglicus' Tractatus quadrantis veteris., Various calendarial and computistical treatises

of the foundation collections of the British Library. Table Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Statement as to the time of the vernal equinox in the year 1293., Various calendarial and computistical treatises

the foundation collections of the British Library. Text page Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of a decorated initial 'I'(ntencio) at the beginning of Robert Grosseteste's De sphaera., Various calendarial and computistical treatises

of the foundation collections of the British Library. Detail Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of an astronomical diagram illustrating Robert Grosseteste's De sphaera., Various calendarial and computistical treatises

of the foundation collections of the British Library. Detail Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of a decorated initial 'I'(ntencio) at the beginning of Robert Grosseteste's De sphaera., Various calendarial and computistical treatises

the foundation collections of the British Library. Decorated initial Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of an astronomical diagram showing an eclipse of the moon, illustrating Robert Grosseteste's De sphaera., Various calendarial and computistical treatises

of the foundation collections of the British Library. Detail Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Detail of an astronomical diagram showing an eclipse of the sun, illustrating Robert Grosseteste's De sphaera., Various calendarial and computistical treatises

of the foundation collections of the British Library. Detail Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Text page with calendrical tables illustrating Robert Grosseteste's Computus correctorius., Various calendarial and computistical treatises

of the foundation collections of the British Library. Tables Various authors including Bede, Johannes de Sacro Bosco (index Johannes de Sacrobosco, John de Sacrobosco), Robertus Anglicus (index Iohannes Anglicus de Montepessulano; Robertus Anglicus of Montpellier), Robert Grosseteste (index Lincolniensis) England

• Ownership inscription of Simon, abbot of the Benedictine abbey of St. Mary and St. Benedict, Ramsey, 'Liber domini Simon. abbatis Rameseye', with a table of contents., De consensu evangelistarum, De musica

393) (f. 84v);Pseudo-Augustine, Sermo de oratione dominica (serm. 58) (f. 84v) (all texts are attributed to Augustine in the manuscript); John of Damascus trad. by Burgundio of Pisa, De fide orthodoxa (ff. 85-107v); Thomas Gallus, 'Extractio' (attributed here to Dionysius

• Less colourful than the first two major divisions at Psalms 1 and 51, the large decorated initial 'D'(omine) and display capitals at the beginning of Psalm 101 are here executed in just blue and red, with some details in orange. Between the lines of the main Latin text is a translation in Old English., Psalter, in the Roman version (ff. 4-95), with canticles (ff. 96-104), a short litany (f. 104), a hymnal (ff. 105-128) and monastic canticles (ff. 129-135); added calendar (ff. 2,3) (the 'Bosworth Psalter')

earl of Arundel (b. 1512, d. 1580): inscribed 'Arundel' (f. 2); the Arundel collection bequeathed to Lord Lumley, his son-in-law. John Lumley, 1st baron Lumley (b. c.1533, d. 1609), collector and conspirator: inscribed with his name (f. 2). ? Perhaps

• Initial 'P'(rimo) with foliate decoration at the beginning of the hymns., Psalter, in the Roman version (ff. 4-95), with canticles (ff. 96-104), a short litany (f. 104), a hymnal (ff. 105-128) and monastic canticles (ff. 129-135); added calendar (ff. 2,3) (the 'Bosworth Psalter')

earl of Arundel (b. 1512, d. 1580): inscribed 'Arundel' (f. 2); the Arundel collection bequeathed to Lord Lumley, his son-in-law. John Lumley, 1st baron Lumley (b. c.1533, d. 1609), collector and conspirator: inscribed with his name (f. 2). ? Perhaps

• 3 incomplete initials showing the three first stages in the production of a decorated initial: in the right-hand column is a space for an initial 'T' that has not been started; to its left is a 'VD' monogram whose design has been sketched in lead point; and above this is a 'P' whose design has been inked-over., Psalter, in the Roman version (ff. 4-95), with canticles (ff. 96-104), a short litany (f. 104), a hymnal (ff. 105-128) and monastic canticles (ff. 129-135); added calendar (ff. 2,3) (the 'Bosworth Psalter')

earl of Arundel (b. 1512, d. 1580): inscribed 'Arundel' (f. 2); the Arundel collection bequeathed to Lord Lumley, his son-in-law. John Lumley, 1st baron Lumley (b. c.1533, d. 1609), collector and conspirator: inscribed with his name (f. 2). ? Perhaps

• Puzzle initial 'S'(usceptis) with foliate penwork decoration and pen-flourishing extending into the margin with a fish., Register of letters (ff. 7v-198v), with table of chapters (ff. 1-7); Dialogue of Basil and John Chrysostom (ff. 198-224); Isidore of Seville on Music (ff. 224v-225)

without blue pen-flourishing (ff. 224v-225v). Register of letters (ff. 7v-198v), with table of chapters (ff. 1-7); Dialogue of Basil and John Chrysostom (ff. 198-224); Isidore of Seville on Music (ff. 224v-225) The Cistercian abbey of St Mary, Cambron: inscribed 'Liber