1914. This book presents a new art of diagnosing with perfect certainty from the iris of the eye the normal and abnormal conditions of the organism in general and of the different organs in particular. It represents a scientific essay for the public and medical profession. Many original illustrations. Contents: allopathy vs. natural method of healing; history of the diagnosis from the eye; teachings of the diagnosis from the eye; key to the diagnosis from the eye; practice of the diagnosis; natural method of healing; natural healing factors; remarks; corroboration.