When "Rome" appeared as a volume early in the spring of 1896,[11] M. Gaston Deschamps, writing in "Le Temps," roundly accused Zola of plagiarism, and it is certain that here and there "Rome" contained sentences taken from Firmin Didot's publication, "Le Vatican," and Gaston Boissier's "Promenades archéologiques." Zola, on being accused, replied in "Le Figaro" to the effect that when he was writing a book he invariably consulted every available work bearing on his subject. He passed several of his former novels in review, mentioning the books by others which had been useful to him, and also naming the politicians, merchants, scientists, lawyers, architects, and others who had provided him with detailed memoranda on various points. For instance Jules Ferry had given him some information about the Haussmannization of Paris for "La Curée," M. Chauchard, the director of the "Grands Magasins du Louvre," had largely assisted him with "Au Bonheur des Dames," M. Edmond Perrier, the scientist, had helped him with the passages about seaweed and bromide of potassium in "La Joie de Vivre," M. Frantz-Jourdain, the eminent architect, had constantly befriended him in architectural matters, M. Henri Céard had supplied him with notes on music, and M. Thyébaut with consultations on points of law, while the theory of an "elixir of life," embodied in "Le Docteur Pascal," had been built for him by his friend Dr. Maurice de Fleury. Indeed Zola claimed that he had never discussed a scientific question or written about an illness in his books without first taking the opinion of scientists and medical men. But he claimed that he had assimilated, adapted, and in a sense transmuted all the information he had derived from persons and books. As for "Rome" he was charged with having borrowed some sentences from two or three well-known works, but, in fact, he had consulted some scores of volumes, the titles of many of which he gave. Briefly, he pictured himself as an architect or a sculptor, and his materials as building stones or modelling clay; suggesting also the example of those masters of the Renaissance who employed a swarm of workers to prepare their paints, their "grounds," and so forth. And he contended that what he had done was perfectly legitimate, the only question being whether he had so used his materials as to produce a substantial, harmonious result, and had infused into it the spirit of life. "If it were usual," he added, "to indicate one's authorities in a novel, I would willingly stud the bottom of my pages with foot-notes. And if a line from a fellow-writer remains intact in one of my pages, this simply proves that I am not hypocrite enough to hide my borrowing, which it would be so easy to conceal."