Primary Sources
John Dumbleton’s Summa logicae et philosophiae naturalis is available only in manuscript form. Among the many good manuscripts are Cambridge, Peterhouse 272 and Vatican City, lat. 6750
An outline in Latin ofParts II-Vof the Summa is contained in Edith Sylla (1970, 1991) The Oxfordcalculators andthe mathematics ofmotion, 1320-1350. Physics and measurement by latitudes. Harvard University PhD dissertation, 1970; repr. with new preface and errata, Harvard dissertations in the History of Science (1991) Garland Publishing, New York/London, pp 565-625. This outline primarily, but not always uses passages from the copy of the Summa in MS Cambridge, Peterhouse 272
An unpublished transcription of the early parts of the Summa based on MS Vatican Citylat. 6750, made by James A. Weisheipl in preparation for his 1956 Oxford University dissertation. Early fourteenth century physics of the Merton ‘school’: with special reference to Dumbleton and Heytesbury, 2 vols, is deposited at the Pontifical Institute for Mediaeval Studies in Toronto
Secondary Sources
Molland G (1973) John of Dumbleton and Sylla E (2008) Dumbleton, John. In: Complete dictionary of scientific biography, vols 7, 20. Charles Scribner, Detroit (available from Gale, online, through academic libraries)
Molland G (1974) John Dumbleton and the status of geometrical optics. Actes du XIIIe Congres International d’Histoire des Sciences 3/4, Moscow: Editions ‘‘Naouka,’’ 1-6. Reprinted in Molland G (1995) Mathematics and the medieval ancestry of physics. Variorum, Aldershot
Sylla E (1973) Medieval concepts of the latitude of forms: The Oxford calculators. AHDLMA 40:223-283
Sylla E (1991) The Oxford calculators and mathematical physics: John Dumbleton’s Summa logicae et philosophiae naturalis, Parts II and III. In: Unguru S (ed) Physics, cosmology and astronomy, 13001700: tension and accommodation. Boston studies in the philosophy of science, vol 126. Kluwer, Dordrecht, pp 129-161
Weisheipl J (1959) The place of John Dumbleton in the Merton school. Isis 50:439-454
Weisheipl J (1969) Repertorium Mertonense. Mediaev Stud 31:174-224 (contains a list of manuscripts of Dumbleton’s work)