" Vernet received his commission for this project in 1838, a year in which concessions for the construction of railroads were a subject of passionate debate, and many of the deputies were carried away by visions of the glorious future this new invention would usher in, typical of which was the speech of the director of bridges and railroads in which he proclaimed that, after the invention of the printing press, railroads represented the greatest advance in the history of civilization.
In response to this enthusiasm Vernet broke traditional rules of decorum in his enormous mural, combining classical figures and traditional allegorical emblems with products of the industrial revolution. In one section of his mural composition, usually entitled Le Génie de la Science (The genius of Science), a nude allegorical figure is seated in the foreground, one hand on an air pump, the other on an anvil, while a modern steam locomotive is driven toward a railroad tunnel in the background (see Figure 2-2). If Vernet had been limited to one symbol to characterize the social and economic reality of the July Monarchy, it is doubtful that he could have found a better one. "

― , The Art of the July Monarchy: France, 1830 to 1848