Description of University of Pennsylvania LJS 26: Algorismus ; University of Pennsylvania 2015-02-11 2015-02-11 These images and the content of Kislak Center for Special Collections, Rare Books and Manuscripts LJS 26: Algorismus ; are free of known copyright restrictions and in the public domain. See the Creative Commons Public Domain Mark page for usage details, http://creativecommons.org/publicdomain/mark/1.0/. To the extent possible under law, University of Pennsylvania Libraries, Lawrence J. Schoenberg Manuscripts has waived all copyright and related or neighboring rights to this metadata about Kislak Center for Special Collections, Rare Books and Manuscripts LJS 26: Algorismus ;. This work is published from: United States. For a summary of CC0, see https://creativecommons.org/publicdomain/zero/1.0/. Legal code: https://creativecommons.org/publicdomain/zero/1.0/legalcode. Ms. codex. Title for manuscript from caption title of first work and incipit of second work (f. 1r, 9v); second work is also known as Sphaera mundi. 1. f.1r-9v: Algorismus. 2. f.9v-30v: Tractatum de sphaera. 3420 Walnut Street, Philadelphia, Pennsylvania 19104-6206 University of Pennsylvania Kislak Center for Special Collections, Rare Books and Manuscripts LJS 26 9946463483503681 http://www.worldcat.org/oclc/759865434 http://hdl.library.upenn.edu/1017.12/1330538 http://hdl.library.upenn.edu/1017.12/366278 https://colenda.library.upenn.edu/catalog/81431-p3f92w https://openn.library.upenn.edu/Data/0001/html/ljs26.html https://repository.upenn.edu/handle/20.500.14332/61572 Treatise on the fundamentals of arithmetic (Algorismus), followed by a treatise on cosmography that describes and illustrates the Ptolemaic model of a spherical earth divided into climactic zones at the center of the concentric spheres of the universe. The second treatise has marginal notes in the same ink and possibly hand as the text, as well as notes in a later cursive hand in faint ink and a bifolium written in this later hand bound in (f. 23-24). Latin Algorismus ; Sacro Bosco, Joannes de, active 1230 Sacro Bosco, Joannes de, active 1230 1r Algorismus, f. 1r 9v Tractatus de sphaera, f. 9v

parchment

 30 leaves : 182 x 128-130 (128 x 85) mm bound to 188 x 138 mm

Parchment, 30; 1¹⁰ 2¹⁰⁻¹(-4) 3¹⁴⁻³(-1, -2, -3; center bifolium is a replacement or an addition); [1-30] ; modern foliation in pencil, upper right recto. Link to collation model at end of record.

 Written in 25-26 lines; prickings visible on many leaves. Written in Gothic script. 7 astronomical diagrams in black and red ink (f. 10r, 12r, 12v, 25v, 28r, 28v, 29r), 2 astronomical diagrams in black ink (f. 29v, 30r), and 2 illustrations in red and black ink (f. 13r), all in second work; 2-line initial in red and blue with faded penwork extensions (f. 1r); 5-line divided initial in red (f. 9v); caption title (f. 1r) and marginal rubrics in first work (f. 1r-9v) in red, 2-line initials and paragraph marks throughout in red. Decorated initial, Initial O, f. 1r Diagram, f. 8r Owner signature, f. 9v Decorated initial, Initial T, f. 9v Diagram, f. 10r Diagram, f. 12r Diagram, f. 12v Diagram, f. 13r Diagram, f. 25v Diagram, f. 28r Diagram, f. 28v Diagram, f. 29r Diagram, f. 30r

20th-century morocco with gilt (rebound in 1997).

Written in Italy in the mid-13th century.

between 1225 and 1275 Italy Possible ownership inscription: Brother Pietro di Santo Giovanni (Frater Petrus de Sancto Joanne), Florence (?), 1399 (inscription, f. 9v). Sold at auction at Sotheby's, 2 Dec. 1986, lot 35, to Lawrence J. Schoenberg. Deposit by Lawrence J. Schoenberg and Barbara Brizdle, 2011. Gift of Barbara Brizdle Schoenberg, 2021. Arithmetic--Early works to 1900 Arithmetic Astronomy--Early works to 1800 Astronomy Astronomy, Medieval Astronomy, Medieval Cosmography--Early works to 1800 Cosmography codices (bound manuscripts) diagrams treatises Manuscripts, Latin--13th century Manuscripts, Medieval