Bibliographical footnotes Demonstration and self-evidence, by E.D. Simmons.--The significance of the universal ut nune, by J.A. Oesterle.--William Harvey, M.D.: modern or ancient scientist? by H. Ratner.--Medicine and philosophy in the eleventh and twelfth centuries: the problem of elements, by R.P. McKeon.--The origins of the problem of the unity of form, by D.A. Callus.--The celestial movers in medieval physics, by J.A. Weisheipl.--Gravitational motion according to Theodoric of Freiberg, by W.A. Wallace.--"Mining all within," Clarke's notes to Rohault's Traité de physique, by M.A. Hoskin.--Darwin's dilemma, by C. DeKoninck.--[phi]úsló: the meaning of nature in the Aristotelian philosophy of nature, by S. O'F. Brennan.--Order in the philosophy of nature, by M. Glutz.--Motionless motions, by R.A. Kocourek.--Time, the measure of movement, by Sister M. Jocelyn.--Evolution and entropy, by V.E. Smith