NEUE WELTANSCHAUUNG. Redaktion Dr. W. Breitenbach. 6. Jahrgang. 1913. Heft 10.
Berlin: Hans Schippel, 1913. Contains an article by Haeckel entitled, Die Grenzen der Naturwissenschaft. Original wrappers. Wrappers very worn and splitting at spine; staples rusty; generally tired. Inscribed at head of title to Hermann Scheffauer from Haeckel, and signed by him.