A lexicon written in the mid-19th century. The work explores the rich and varied argots of Paris, meticulously collecting expressions and jargon used by different social classes, particularly the urban and working-class residents. With a blend of linguistics and cultural observations, this dictionary aims to document the vibrant tapestry of language specific to the streets of Paris during that period. The opening of the book introduces the author's reflections on the importance of studying language and its intricate connection to society. Delvau discusses his enjoyment in collecting various expressions over several years, likening his pursuit to hunting for butterflies. He emphasizes the richness of the argot, or ''green language,'' found in the everyday interactions of Parisians, contrasting it with the formal language championed by the Académie. This sets the stage for a comprehensive analysis of numerous terms and phrases, providing insights into both linguistic innovation and the social dynamics of the time.
