This reference includes the advanced material of the “Alchemical Process” and the “Twelve Stages of the Great Work” which has not been publicly available for more than 75 years. It is with great pleasure that we introduce “Hermetic Alchemy: Science and Practice” by Paul Foster Case, the second volume of the Rosicrucian Order of the Golden Dawn’s ‘Golden Dawn Alchemy Series’, a collection of distinguished books on Alchemy written by leaders of the Golden Dawn Tradition. This book will be of great value to those who have not had the opportunity to pursue the B.O.T.A. lesson coursework through the ‘Great Work’ course but would like to study Alchemy from one of the greatest leaders of the Golden Dawn in the 20th century; those who have already progressed to Paul Case’s ‘Great Work’ course will find this current volume of interest in tracing the evolution of his thought and assisting them in understanding some of the more cryptic passages. This book includes the advanced material of the Alchemical Process and the Twelve Stages of the Great Work which has not been publicly available for over 75 years. Enjoy!