JOHANNES DE SACRO BOSCO, ALGORISMUS, VENICE, 1523, CARTA RUSTICA

4to (209 x 148mm.), 8 ff., woodcut Sessa device on title-page, woodcut initials, woodcut diagram on final verso, modern binding reusing old carta rustica, modern printed paper label on upper cover, small stain at head of last leaf

C.E. Rappaport, Rome, book label, bought in 1994

Tomash & Williams S2; Edit16 47685 (listing 3 copies); Smith, Rara arithmetica p.35

Condition is described in the main body of the cataloguing, where appropriate
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

RARE. Sacro Bosco's tract on algebra was first printed in Strassburg in 1488, as part of Anianus's Computus. It is a brief treatise which introduced Arabic numerals into the curriculum in order to simplify calculations; its popularity and widespread use is attested by the number of surviving manuscripts and its appearance in medieval university curricula.