Auguste Allongé attended the Imperial School of Fine Arts from 1852 in Paris. There he was a pupil of Leon Cogniet and of Ducornet . He received a medal in 1853. A landscape painter, he teaches drawing: there is a photograph of him in his studio taken by photographer Adolphe Giraudon (1849-1929). He published in 1873 a treaty on the technique of charcoal drawing translated into several languages . Noting that charcoal serves mostly only for sketches, he tried to give to this art the finishing and the ambition of the completed works. Close to the Barbizon School , it is part of the Marlotte Group, it is sensitive to the effects of light, it replaces color by a very fine study of values. An expert Of time would have said: ” Lying is the charcoal drawing, and drawing with charcoal is Lying.” In 1896, his studio was located in Paris, at no. 6 passage Stanislas 3 . A street in Bourron-Marlotte bears his name.