\ The history of medicine is closely interlinked with the development of theology. The errors of one are for the most part reflected in the mistakes of the other. No matter how obscure and dark the origin of either, whether derived from ignorance and superstition or not, the ultimate achievement alone must be taken into consideration. We do not reject chemistry because it originated in alchemy, we do not disregard astronomy because its roots are entwined with the teachings of astrology, and so in theology and medicine we look to the final issue. The statements set forth in this book should not be construed as reflecting the development of theology or medicine at the time, but as the belief of the people existing in these periods. Philosophy may have been pure, but if the mind of man was faulty the responsibility must not be laid at the door of science.\ This book superstition in medicine is a reprint of the original, initally published in 1905.