Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Ments and modified our individual opinions not only by the best authorities in the literature of the several subjects treated, but by the collaboration of many living writers who are specialists in distinct branches of esoteric science. In this respect the book may be accepted as the result of a collective endeavour rather than of an unaided effort, and it will be received with an increased confidence on this ground.
