Les terres du ciel; voyage astronomique sur les autres mondes et description des conditions actuelles de la vie sur les diverses planètes du système solaire;
Flammarion's 1884 Paris popular astronomy book Les terres du ciel, a French-language tour of life on the planets printed by Lemercier and published by Marpon and Flammarion for a general lay readership. The pictures are black-and-white halftone-style plates: rows of dark-ground circular telescope views of Mars, a grid of rings showing Saturn's globe at changing tilts, and a line diagram of the solar system's motion through space, all useful for designers wanting scientific engraving textures and diagrammatic framing.
