Dr. David MacLean is one of Canada's leading chemists in the field of natural products. His studies, in the 1950's, on the structure of annotinine set the stage for an intensive program of research on the lycopodium alkaloids in a number of laboratories, of which his own has continued to be in the forefront. Recognizing the potential of the mass spectrometer in the elucidation of chemical structure, he pioneered in its use in Canada and he is recognized as an important contributor to the field. For the past five years, he has been an effective leader as Chairman of the Department of Chemistry.

Dr. MacLennan is internationally known for his work on isolation and characterization of proteins of the sarcoplasmic reticulum. His laboratory has cloned DNA encoding many of these proteins and used heterologous expression and site-directed mutagenesis to understand structure- function relationships in such key transport proteins as the Ca2+ pump, the Ca2+ release channel, modulatory proteins such as phospholamban and sarcolipin and Ca2+ binding proteins such as calsequestrin, calreticulin and sarcalumenin. His work has contributed greatly to our present knowledge of the mechanism of cation transport across biological membranes. He has demonstrated the genetic basis for inherited muscle diseases resulting from defects in Ca2+regulatory proteins and he has contributed to diagnosis and understanding of the pathophysiology of these human diseases. He has also contributed to agriculture through development of a diagnostic test for porcine stress syndrome, leading to its elimination from herds worldwide.

Bob MacLeod, originally trained as a chemist at U.B.C. worked under the direction of Prof. E. Snell at the University of Wisconsin on metal ion nutrution. He has continued his research in this area studying intensively the requirements for certain metal ions on a marine bacterium. His elegant techniques and deep insight into the role of cell walls and cellular membranes in transport mechanisms have given him international fame. He is in constant demand to present his research orally and in chapters for spcecialty textbooks. He has been able to assemble a very active group of graduate students and post-doctoral fellows that has become on of the most prolific and best known in Canada. Dr. MacLeod received the Harrison Prize from the Royal Society of Canada in 1960. He is an active member of various societies especially the Canadian Society of Microbiologists whom he has served in many capacities and the Canadian Journal of Microbiology having served as both Associate and Assistant Editor. He is Professor in the Department of Microbiology, Faculty of Agriculture, at McGill University.

Alistair MacLeod is one of the foremost writers, scholars and teachers in the field of Canadian literature. His contribution both to creative writing and to literary scholarship is immense. He is a brilliant and evocative writer, whose stories of Maritime Life intensely enact the perils and passions of a whole way of life. His writings, particularly his short stories, have been translated into thirteen (13) languages. Praise for his work has come from every corner of Canada and from other parts of the world: he has been characterized as "one of North America's masters of the short story" as well as "a truly great writer." Reflecting on MacLeod's work, the late Hugh MacLennan stated: "This may well be the best pure writing ever to appear in Canadian Fiction."

MacRae's early research in galactic structure, stellar photometry and spectra, and stellar statistics constituted a significant contribution to our knowldege of the detailed structure of the galaxy and interstellar material. Since returning to the University of Toronto in 1953 he has vigorously supported the research programs of the David Dunlap Observatory and has shown an outstanding degree of versatility in initiating new research programs. Among these were: (a) the setting up of a technique of precision photometry for the determination of the apparent magnitudes of over 1000 stars of a large radial-velocity program, (b) pioneer work in the use of an electronic computer for the solution of spectrographic binary orbits, (c) the design, construction and use (in collaboration with Oke) of a photoelectric spectrophotometer for the 74-inch telescopean instrument which is the prototype of similar instruments now used elsewhere, (d) the organization and leadership of a radio astronomy project, operated with continuing and increasing government support, jointly by the Departments of Astronomy and of Electrical Engineering at the University of Toronto. This radio astronomy project has served the IGY in the study of solar radio radiation as well as the IAU and URSI in the measurement of absolute flux from discrete sources, and it is an important centre of research training for radio astonomers and a source and testing ground of new ideas for the new Canadian radio observations at White Lake, B.C. (Dominion Observatories) and at Algonquin Park (N.R.C.).