smoke in The Attempt Against the Life of Maitre Labori is a puff of poudrederiz, a cosmetic powder. Taken as a whole, The Dreyfus Affair can be considered
Joseph Auguste; Riffault des Hêtres, Jean René (1811). Traité de l'art de fabriquer la poudre à canon (in French). Paris: Leblanc. pp. XCII. Pénet, Gabriel-Henri