Trattato delle proportioni et proportionalità [manuscript] ; Dialogo sopra la particolare dichiaratione del giuoco di Pitagora inter locutori Carlo Strozzi, Cosimo Rucellai, et Iacopo Vettori.

Varchi, Benedetto, 1503-1565.
[Florence, Italy, after 1539]
60 leaves : paper, ill. ; 220 x 166 (168 x 126) mm. bound to 236 x 172 mm.
Martini, Luca.
Rucellai, Cosimo.
Vettori, Jacopo.
Rithmomachia (Game)
Mathematical recreations -- Early works to 1800.
Manuscripts, Italian -- 16th century.
Manuscripts, Latin -- 16th century.
Manuscripts, Renaissance.
Italian with a short section in Latin (f. 49r-49v).
Treatise by Benedetto Varchi on proportion as the basis for rithmomachia, a mathematical game played on a chessboard with pieces that each have a shape and a number; a dialogue written by Carlo di Ruberto Strozzi, in which Cosimo Rucellai, who introduced the game to Benedetto Varchi, teaches the rules to Strozzi and Jacopo di Piero Vettori; and other notes on the game. Later unrelated notes and pen trials on leaves before and after main texts. Damage and bleed-through due to oxidation on many leaves.
1. f.1r-2v: [Letter from Benedetto Varchi to Luca Martini] / Benedetto Varchi.
2. f.3r-26r: Trattato delle proportioni et proportionalità / [Benedetto Varchi]
3. f.26v-46r: Dialogo sopra la particolare dichiaratione del giuoco di Pitagora inter locutori Carlo Strozzi, Cosimo Rucellai, et Iacopo Vettori / [Carlo Strozzi]
4. f.46v-51r: Richimimachia.
Ms. codex.
Title from caption titles (f. 3r, 26v).
Collation: Paper, 60 + 1 loose diagram; 1⁴ 2-4¹⁶ 5-6⁴; [i-iv], 1-15, [16], 17, [18-23], 24, [25-56]; contemporary foliation in ink, modern foliation in pencil, upper right recto.
Layout: Written in 22-24 long lines.
Script: Written in an italic script in the hand of Marchiono de Marchioni (f. iii recto).
Decoration: 6 diagrams and drawings of arrangements of numbers or shapes on grids (f. 18r, 30v, 33v, 35v, 36r, 1 loose); 1 small marginal diagram (f. 3r); later sketches in pastel of faces in profile (f. ii verso-iii recto); red initials and rubrics in red with occasional blue initials throughout. Diagrams are very fragile due to oxidation.
Binding: Parchment wrapper formed from a leaf of a 14th-century register of the commune of Florence, with stubs of 2 pairs of ties; a madrigal by Petrarch (Or vedi, Amor...) is written on the upper cover.
Origin: Written in Florence after 1539 (f. 2v).
Penn Provenance:
Early ownership inscription without full name (Hic liber est mei Marci Antonii, f. i recto).
Formerly in the Bibliotheca Bardi-Serzelli, in Pelago, east of Florence (19th-century (?) bookplate, inside upper cover).
Formerly owned by Giannalisa Feltrinelli (bookplate, inside upper cover and inside case).
Sold at auction at Christie's in Part 2 of the sale of the Feltrinelli collection, 3 Dec. 1997, lot 220, to Lawrence J. Schoenberg.
Deposit by Lawrence J. Schoenberg and Barbara Brizdle, 2011.
Cited in:
Described in Transformation of knowledge: early manuscripts from the collection of Lawrence J. Schoenberg (London: Paul Holberton, 2006), p. 45-46 (LJS 232).
Cited as:
LJS 232
Strozzi, Carlo, 1517-
Marchioni, Marchiono de, scribe.
Feltrinelli, Giannalisa, former owner.
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