This is a monumental work of 10 volumes by Dr C. Hering which is rearranged and augmented. In Hering's Guiding Symptoms, the emphasis had shifted to confirmed symptoms. Consequently, the proportion of confirmed symptoms to others is much greater. For Hering, a symptom did not acquire the status of a guiding symptom unless, apart from its appearance in a prover or provers, it was verified at the bedside a number of times. Hering laid down the criteria for the value of symptoms on that very basis. In his "Guiding Symptoms", he set the evaluation of symptoms at four grades, just as Boenninghausen had done in his repertory. BOOK HIGHLIGHTS:- Evaluation of symptoms in four grades following Boenninghausen?s Therapeutic Pocket Book. The author has given references for the relationship of drugs and also the hints for comparative study. Mention of various pathological conditions or diseases in which a particular symptom was cured by a particular drug. The reliability of the symptoms is doubly insured by repeated observations and confirmation on the sick in certain conditions of illness. Hering gave us the 'matured' Materia Medica!