Or the aura made visible by the aid of chemical screens. The perception of the human atmosphere or aura, by the sole employment of material means, makes the phenomena a physical question. The author researched this subject from a unbiased standpoint and did not read any accounts of the aura until a large number of patients had been inspected. Included are 28 figures of different auras found in people and a list of tables and 42 cases which are discussed within the book.