Two treatises on gnomonics Ibn al-Raqqām, Muḥammad ibn Ibrāhīm ابن الرقام، محمد بن ابراهيم

Content

Two treatises on the construction and use of sundials by the Andalusian scholar Abū ʿAbd Allāh Muḥammad ibn Ibrāhīm ibn ʿAlī ibn Aḥmad ibn Yūsuf al-Mursī al-Andalusī al-Tūnisī al-Awsī ibn al-Raqqām (عبد الله محمد بن إبراهيم بن علي بن أحمد بن يوسف المرسي الأندلسي التونسي الأوسي بن الرقام, d. 1315).

Although the copy is undated, the use of the phrase 'may God prolong his life and brighten his sky with benefic stars (أدام الله حياته وأنار بنجوم السعد سمائه)' after the author's name (f. 1v, lines 5-6) indicates that it was copied before the death of the author in 715 AH/AD 1315.

The title page (f. 1r) reads Kitāb al-ẓilāl (كتاب الظلال).

Contents:

• (1) Ibn al-Raqqām (ابن الرقام), Risālah fī ʿilm al-ẓalālāt (رسالة في علم الظلالات; ff. 1v-29v);
• (2) Ibn al-Raqqām (ابن الرقام), ʿAmal ʿāmm fī ʿamal ālāt al-iẓlāl (عمل عام في عمل آلات الإظلال; ff. 30r-30v).

Extent and format

Codex A collection of pages, usually gathered into quires, and bound between covers. ; ff. i+30+ii

It is grouped into

Risālah fī ʿilm al-ẓalālāt رسالة في علم الظلالات Ibn al-Raqqām, Muḥammad ibn Ibrāhīm ابن الرقام، محمد بن ابراهيم

57 images

Ref: Or 9587, ff 1v-29v

‘Amal ‘āmm fī ‘amal ālāt al-iẓlāl عمل عام في عمل آلات الإظلال Ibn al-Ruqqām, Muḥammad ibn Ibrāhīm ابن الرقام، محمد بن ابراهيم

2 images

Ref: Or 9587, ff 30r-30v

Physical characteristics

Material: Paper

Dimensions: 258 x 165 mm leaf [210 x 128 mm written]

Foliation: British Museum foliation in pencil

Ruling: Misṭarah ; 21 lines per page; vertical spacing 10 lines per 10 cm

Script: Maghribī

Ink: Black

Binding: British Museum binding

Condition: Waterstains, leaves repaired at edges; lower half of f. 30 has been badly damaged by waters and worms

Marginalia: Occasional

Written in

Arabic in Arabic script

Type

Manuscript

Access & Reference

Original held at

British Library: Oriental Manuscripts

Access conditions

Unrestricted

Archive reference

Or 9587

History of this record

Date(s)

1270-1315 (CE, Gregorian)

Context of creation

Spain or North Africa

Immediate source of acquisition

Purchased from Dr A.S. Yahuda, 4 April 1925

Related material

Select Bibliography

Casulleras, Josep, 'Ibn al-Raqqām: Abū ʿAbd Allāh Muḥammad ibn Ibrāhīm ibn ʿAlī ibn Aḥmad ibn Yūsuf al-Mursī al-Andalusī al-Tūnisī al-Awsī ibn al-Raqqām' in The Biographical Encyclopedia of Astronomers , Thomas Hockey et al., eds., (New York: Springer, 2007) pp. 563-564

Subjects

Sundials --Early works to 1800

People & organisations

Muḥammad ibn Ibrāhīm Ibn al-Raqqām

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Two treatises on gnomonics Ibn al-Raqqām, Muḥammad ibn Ibrāhīm ابن الرقام، محمد بن ابراهيم, British Library: Oriental Manuscripts, Or 9587, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100022581718.0x000001> [accessed 11 December 2024]

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