Surface marking of keynotes is anew and very interesting method of studying Materia Medica. Every possible attempt has been made to present the individualistic feature of every drug to make the study interesting and within easy grasp. In this book there are three different coloured dots (red, blue, green) marked on the body surface to denote the location and gradation of symptoms covered. In this way we can easily frame a picture or get an impression in our mind about which drug for which part of the body is most affected by it. Symptoms are written opposite the body sketch and only the most striking characteristics and clinical symptoms are shown. All drug symptoms are arranged according to there clinical importance under three grades and not in an anatomical order for easy reference.