Dr. Campbell's first major contribution to knowledge was a new study of the respiratory muscles in man. Using primitive equipment, but a high degree of ingenuity, he made basic contributions to understanding the control of breathing in man and the way in which the symptom of shortness of breath was signalled in the human body. He broadened his field of study to include the control of arterial blood tensions in man and this work led directly to a re-examination of the methods of treating respiratory failure in the human, which placed this important clinical problem in a new scientific context and introduced a very important modification of traditional treatment which has since been everywhere adopted. He had in addition consistently applied basic scientific knowledge to the investigation of clinical problems, and has made distinguished contributions to the educational field by examining the ways in which the scientific principles underlying medical treatment can be better taught to medical students whose ambitions for themselves are all too often limited by a narrow pragmatic perspective. He has published three major books under his own authorship and collaborated in the production of a further five. His many scientific papers on a variety of topics indicate the breadth of his scientific knowledge and the exordinary ingenuity of his experimental approach to clinical problems. Of his generation, Dr. Moran Campbell is unquestionably one of the most distinguished examples of the success of the rigorous application of scientific method to clinical problems and his career in this field has been one of the most distinguished of any of his contemporaries.

Dr. Canvin has provided critical background research, great personal and intellectual vigor and strong leadership to a wide range of basic and applied problems in plant biology. His 68 publications cover work on fat metabolism, photorespiration and photosynthesis, and various aspects of the growth and metabolism of agriculturally important plants. He has lectured widely in North and South America and Europe, and has acted as a consultant for important USDA and UNESCO projects. He has also been a leader in the Canadian scientific community as well as within his university, serving on important national and university committees.

Dr. Carroll is a world authority on vertebrate palaeontology and the evolution of vertebrates. His research has produced new insight into (1) the origin of reptiles and the early radiation of amniotes. (2) the position of the Microsaurs (palaeozoic amphibians) as ancestors of the modern limbless amphibia, (3) the cladistic relationships of primitive diapsids (ancestors of modern birds and reptiles), (4) the factors involved in the transition between terrestrial animals and groups of secondarily aquatic animals, and (5) the general problems of large scale evolution and long term change. He is the author of the new definitive text on vertebrate palaeontology.

A.J. Carty has accomplished a large body of work on coordination compounds of the group III elements and he has made seminal contributions to the complexation of toxic mercurials at biological sites. He has pioneered the use of phosphinoalkynes as versatile ligands and is an internationally recognized authority on phosphide and acetylide polynuclear chemistry. Articles in these fields were among the 100 most cited papers in pure chemistry in 1981-84. Recently he has been a principal contributor to our understanding of structure-reactivity patterns in metal cluster chemistry. In addition he has played a major role in Canadian chemistry as chairman and group chairman of NSERC peer review committees.

Dr. Petr Cerny is without doubt the world's leading expert on pegmatites. His expertise spans all aspects of this complex and important group of rocks, from mineralogy, petrology and petrogenesis to geochemistry, economic geology and exploration techniques. His tremendous enthusiasm and scientific insight, coupled with his encyclopedic grasp of all topics in Earth sciences pertaining to pegmatites, has revolutionized both our understanding and the commercial exploitation of these rocks over the past 25 years. This individual effort is widely recognized throughout the world, and is virtually the sole cause of Canada's leading position in this area today.

Dr. John Challis, Director of the Medical Research Council Group in Fetal and Neonatal Health and Development, is an international leader in reproductive biology. He has made very substantial contributions to an understanding of the endocrinology of pregnancy and parturition, and of fetal hypothalamic-pituitary-adrenal development. This has been done by pursuing the general hypothesis that birth is initiated through the sequential maturation of an endocrine organ communication system, beginning with the fetal hypothalamic - hypophyseal adrenal axis, and with subsequent influences on intra-uterine hormone production, and myometrial contractility. John Challis has used very effectively a comparative approach in studies of sheep, monkey and humans that provide advances of a fundamental and theoretical nature that have major clinical relevance. Dr. Challis was elected as President of the Canadian Physiological Society and received a number of awards including the G. Malcolm Brown Memorial Award of CFBS and the President's Scientific Achievement Award of the Society for Gynaecologic Investigation.

Doctor Chant is known for his work on control of agricultural pests using ecological principles and biotic agents, on the quantitative ecology and classification of phytoseiid mites, and latterly as a pioneer in bringing scientific knowledge and the public conscience into closer contact in the struggle to preserve our environment. He has been a dynamic administrator in the Public Service of Canada and in U.S. and Canadian universities. He has served, inter alia, as consultant to the FAO, to the U.S. National Science Foundation and to the Science Council of Canada. He is a member of the Fisheries Research Board.

Dennis Hubert Chitty first became interested in population cycles when, as an undergraduate student at the University of Toronto, he spent four summers as a field biologist with the Ontario Fisheries Research Laboratory on Lake Nipissing. This interest in the factors which regulate the abundance of animals has not lapsed during many years of productive research and close contact with colleagues and students since retirement. Against a background study of the mammal cycles in the Canadian Arctic, he undertook an experimental analysis of the cyclically changing populations of the field vole (Microtus agrestis) in Wales. For a period of twenty-six years, while research officer with the Bureau of Animal Populations in Oxford, he systematically and critically examined the traditional hypotheses for the regulation of the numbers of these small mammals; in turn,he discarded each theory after a careful evaluation of its limitations. Drawing on this and other studies of animal populations, he developed his own hypothesis arguing for a cyclically changing quality (genotypic) in the populations. In 1996 he published an autobiographical account of the history and current status of this hypothesis in a book entitled "Do Lemmings Commit Suicide: Beautiful Hypothesis and Ugly Facts".

Man-Duen Choi has established substantial results concerning positive linear maps between C*-algebras. On the one hand he has convincingly shown that completely positive linear maps are the natural morphisms in the category of C*-algebras. On the other hand he has shown that questions of Hilbert concerning decomposition of positive polynomials can be expressed in terms of positive maps, and he has made marked progress on these classical problems.

Dr. Church is an outstanding geomorphologist and earth scientist. He has made seminal contributions to the study of: (a) hydraulics and morphology of gravel rivers; (b) arctic fluvial environments; (c) hydrological and geomorphological aspects of floods; and (d) flow and sediment transport over boundaries of high roughness. He has also devised original techniques for field measurements and samplings, demonstrated the regional variability of river behaviour in western Canada, and has developed theoretical frameworks for the study of some important problems in earth science. He is internationally renowned for this work and has received high awards from the British Geomorphological Research Group, the Geological Society of America and the Canadian Society for Civil Engineering, as well as Killam and Royal Society of London research fellowships.

Following his early contributions to spherical diffusion and reaction kinetic problems of theoretical polarography, he devoted himself entirely to the application of quantum mechanics to atomic and molecular electronic structure. He made pioneering contributions to the many-electron correlation problem by developing the necessary formalism and deriving the explicit equations for the so-called coupled cluster approach which is presently widely exploited by many researchers. During the last decade he was very influential in the introduction of algebraic methods and large order perturbation theory into quantum chemistry. All his scientific endeavours greatly contributed to bridging the gap between applied mathematics and quantum chemistry.