The authors assemble 137 clinical case histories drawn from psychopathic and state hospitals and private practice to illustrate the varied manifestations, diagnostic challenges, laboratory methods (including Wassermann testing), pathological correlations and treatment responses of neurosyphilis. Early, ambiguous, and advanced presentations are grouped to show differential diagnosis between paretic and diffuse forms, with autopsy findings used to clarify outcomes. Sections discuss treatment regimens, practical guidance for general practitioners, medicolegal and social-service implications, and wartime case digests. A Summary and Key cross-reference propositions to cases, and the work emphasizes systematic diagnosis, correlation of clinical and pathological data, and cautious optimism about modern therapeutic approaches.