NOTES ON OUR CONTRIBUTORS 



James A. Weishedpl, 0. P., S.T. Lr., Ph.D. (Angelicum) in natural 

 philosophy, D. Phu,. (Oxford) in medieval history, is Professor of 

 Medieval Philosophy in the Pontifical Faculty of Philosophy at the 

 Dominican House of Studies, River Forest, Illinois. Formerly Lec- 

 turer in Natural Philosophy at Hawkesyard Priory, England, he is 

 Bursar-Archivist of the Albertus Magnus Lyceum. 



Edward D. Simmons, Ph. D, (Notre Dame) in philosophy, is Associate 

 Professor of Philosophy at Marquette University, Milwaukee. A 

 frequent contributor to The Thomist, he has recently published 

 The Scientific Art of Logic (Bruce, 1961) . 



John A. Oesterle, Ph. D. (Laval) , former Fulbright Research Scholar 

 at the University of Louvain, is Associate Professor of Philosophy at 

 the University of Notre Dame. Among his publications are Logic- 

 Art of Defining and Reasoning (Prentice-Hall, 1952) , and Ethics: 

 The Introduction to Moral Science (Prentice-Hall, 1957) . 



Herbert Ratner, M. D. (Michigan) with graduate work in bacteriology, 

 public health and nutrition, is Associate Clinical Professor of Public 

 Health and Preventive Medicine at the Loyola University School 

 of Medicine, Chicago. Formerly associated with the Great Books 

 in Biology, he is now Director of the Oak Park Department of 

 Public Health. 



Richard P. McKeon, Ph. D. (Columbia) , formerly Dean of the Division 

 of Humanities at the University of Chicago, member of the U. S. 

 delegation to UNESCO, and U.S. counselor of UNESCO affairs 

 at the American Embassy in Paris, is Distinguished Service Pro- 

 fessor of Greek and Philosophy at the University of Chicago. On 

 leave of absence from the university, he is at the Center for 

 Advanced Study in the Behavioral Sciences in Stanford, California. 



Daniel A. Callus, O.P., S.T.M., M. A. (Oxford), D.Phil. (Oxford) 

 in medieval history. Fellow of the Royal Historical Society, Pro- 

 fessor Emeritus of the University of Malta, is Regent of Studies 

 at Blackfriars, Oxford, and Lecturer in Medieval Thought at the 

 University of Oxford. He is widely known in Europe as an authority 

 on thirteenth century Oxford and Paris. 



William A. Wallace, 0. P., S. T. Lr., M. Sc. (Catholic Univ. of America) 

 in physics, Ph. D. (Fribourg) in philosophy, S. T. D. (Fribourg) 

 in moral theology, has research experience in magnetic and acoustic 

 field theory, and in ultrasonics. Author of The Scientific Methodology 



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