NUMBER SYSTEMS AND DECIMALS, 2 VOLUMES

i. [Haüy, René-Just (1743-1822)]. Instruction sur les mesures déduites de la grandeur de la Terre. Paris: De L'Imprimerie Nationale Exécutive du Louvre, An IIe de la Republique une & indivisible, [1793-94], 8vo, one folding engraved plate, later calf-backed marbled boards, (bought from Roger Gaskell, Warboys, 1990), [T&W H79], spotting, binding slightly rubbedii. Raffron de Trouillet, Nicolas (1723-1801). Convention nationale. Dissertation sur la division décimale des nombres. Paris: Imprimerie Nationale, An II [1793], 10pp., folding engraved plate, disbound, (bought from Librairie F. Comellas, Orléans, 1996), [T&W R4], minor spotting, some marginal repairs

Condition is described in the main body of the catalogue, 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."