Bruxelles, H.Dumont libraire-éditeur, rue du persil, 1834, in-8°, 17 x 10,7 cm, (4) nn pp + vii pp + 468 pp, sewn, with the original rose coloured printed wrapper. Uncut copy, with some very slight foxing at some page, cover and margins very slightly dustsoiled, last 6 pp with some dogearing. Excellent copy of this French translation of Babbage's '' On the economy of machinery and manufactures ''. This work appeared in 1832 and was allmost immediately translated into French by the famous French mathematicien Edouard Biot. Our copy is a pirated edition of this first French edition which was published by Bachelier in Paris in the previous year ( 1833). This pirated edition is proof of the immense success of Babbage's work. The system of pirated Brussels editions was in vogue until 1845 when an agreement between France (Paris) and Belgium (Brussels) settled the piracy.