1891

Wilhelm von Waldeyer-Hartz (Berlin), drawing on the research of Cajal, His, Forel, and others, posits neurone theory, coining the term "neuron(e)" to describe the cellular function unit of the nervous system (Rapport, 142). First patient treated with Behring and Kitasato’s diphtheria antitoxin (Dowling, 36; Liebenau, 50). Heinrich Quincke popularizes lumbar puncture (Dowling, 51).