Libellus ysagogicus Abdilazi
Subtitle: Id est serui gloriosi dei: qui dicitur Alchabitius ad magisterum iudiciorum astrorum interpretatus a Ioanne Hispalensi scriptum que ineundem a Iohanne Saxonie editum utili serie connexum incipiunt
Contributors: Johannes, de Erfordia, approximately 1250-approximately 1325; Joannes, Hispalensis, 12th cent, translator; Gregori, Gregorio de', active 1480-1528, printer; Gregori, Giovanni de', 15th cent, printer
Series: Italian books before 1601 -- reel 49, item 5
Publisher: Ioane[m] & Gregoriu[m] de forliuio fratres
Published: 1491
Place of publication: Venetiis [Venice]
Language: lat
Translated from: ara
Number of pages: 82
Subjects: Arab Astronomy; Early works to 1800
Other titles: Libellus isagogicus.
Work titles: Madkhal ilā ṣināʻat aḥkām al-nujūm
Notes: Title from caption on leaf a2r.

Caption title on leaf A1r reads: Comentum Iohannis de Saxonia super textu Alchabicii.

A reprint of the 1485 edition by Erhard Ratdolt. Cf. BM 15th cent.

Imprint from Goff.

Colophon has variant settings: "Impressum uenetiis p[er] Ioha[n]ne[m] & Gregoriu[m] deforliuio fratres a[n]no salutis. Mcccclxxxxi in die. xxvi. Iulii." or "Imp[re]ssum uenetiis p[er] Ioa[n]nem & Gregoriu[m] de forliuio fr[atr]em a[n]no salutis .M. cccclxxxxi. i[n] die. xxvi. Iulii."

Signatures: aa-bb⁸ cc¹⁰ A-G⁸

Chancery quarto, 38 lines; area of text: 156 x 111 mm. With initial spaces with guide-letters; without foliation and catchwords. Register at end.

Includes 4 diagrammatic woodcut illustrations.

BM 15th cent. V, p. 342 (IA. 21012)

BN cat. des incun. A-198.

BSB-Ink. A-234.

Goff A-364.

GW 845.

Klebs 41.5.

Text translated from the Arabic into Latin by Joannes Hispalensis; commentary by Johannes de Saxonia [i.e. Erfordia], edited by Bartholomaeus Alten.