Voci:Ammon, Bebel, Boccardo, Burbank, Butler (Samuel), Carneri, Caruel, Colajanni, Colosi, Eimer, Emery, Espinas, Ferri, Fogazzaro, Geddes, Hartmann, Hologenèse, Kammerer, Kautsky, Kessler, Kirby, Kropotkin, Labriola, Le Bon, Mitchourine, Néolamarckisme, Osborn, Pareto, Perrier, Preyer, Reade, Rosa, Scrope, Sebright, Seidlitz, Sidgwick, Spence, Stephen, Tarde, Tille, Townsend, Vaccaro, Vadalà Papale, Ward, Zincke