Abstract EN:

The technical progresses of the middle and the end of the 19th century, the evolution of the historical and social context have modified the conception of the book who became an object. The advent of the competition in the book market obliged writers and editors to adopt a real strategy. The different elements who play an important role in the conversion of a text into a book, the "peritext" change from an edition to an other and is a part of the strategy. At the fragile limit between text and "out of text", the "peritext" can be use by the writers to present their intentions of writing, to answer the critic, to affirmate their support to the naturalist mouvement or their desire to break off whit him. At once signal and sign, the "peritext" can be a demarcating elemant very significant the reader. Studying the use of the "peritext" by a literary group confirm the existence of networks that influence, in the naturalist mouvement, at once the writing and the reading of the texts.