Covering the general fields of mathematics, astronomy, mathematical geography, physics, chemistry and chemical technology, geology and meteorology, biology, medicine, and physiological psychology, the present collection surveys the field of Greek scientific achievement over a thousand-year period. Many Greek scientific treatises were written and read by cultivated people who did not regard themselves as specialists. These works should appeal today to those readers who wish to understand not only the foundations of modern science, but also a vital element of the humanistic tradition.