Alchemy is central to Jung's hypothesis of the collective unconscious. This book begins with an outline of the process and aims of psychotherapy as seen by Jung. It then moves on to work out the analogies mentioned above and his own understanding of the analytic process. Jung reminds us of the dual nature of alchemy, comprising both the chemical process and a parallel mystical component. He also discusses the seemingly deliberate mystification of the alchemists. Finally, in using the alchemical process to provide insights into individuation, Jung emphasises the importance of alchemy in relating to us the transcendent nature of the psyche.