Medical Practice has seen considerable change in the past century: during this time there has been a greater revolution in medical standards and activities than in the whole previous history of the profession. Medicine has evolved from the gentle art of the eighteenth century to the practice of the precise rationalism of the present day. In applying the techniques of modern science, Medicine has involved itself in almost every aspect of our environment and is becoming more and more a major factor in human ecology. The purpose of this article is to attempt to evaluate, albeit very briefly, the manner in which this change has come about