Der sogenannte animalische Magnetismus oder Hypnotismus : unter Zugrundelegung eines für die Akademiesche Gesellschaft zu Freiburg i. B. gehaltenen populären Vortrages / von Christian Bäumler.
This 1881 German treatise on animal magnetism and hypnotism by physician Christian Bäumler was published in Leipzig by F.C.W. Vogel, adapted from a popular lecture given to the Academic Society of Freiburg im Breisgau for a lay audience. Its single plate is a black-ground diagram of branching lines radiating from a top node to lettered points, with dense networks of thin white strokes that a designer could borrow as a scientific schematic motif.
