Martin Wesley Johns, B.A., M.A. (McM.), Ph.D. (Tor.), is Professor of Physics at Hamilton College, McMaster University. He is known for his important contributions in the field of B- and y-ray spectroscopy. He and his students have built the first Siegbahn-type double-focusing B-ray spectrometers. With this instrument he has been able to establish the decay schemes for a number of radio-active nuclei. Dr. Johns has also been an active member of a medical research team interested in the detection and treatment of thyroid disorders.

Paul Jolicoeur (M.D., Ph.D.) is Director of the Molecular Biology Laboratory of CRIM and an eminent biomedical researcher in the field of retroviruses and cancer. Major contributions have been on the molecular control of the Fv-1 gene, on the identification of several determinants of pathogenecity of murine leukemia retroviruses and on the isolation of revertant cells which are an extraordinary tool to study the interaction of cellular genes with the oncoprotein V-Fos. One of these retroviruses produces paralysis and neurological lesions similar to those produced by the AIDS virus. Jolicoeur has identified and cloned a defective retrovirus responsible for MAIDS (murine acquired immunodeficiency syndrome). Recently his laboratory has developed a novel model of Aids in mice expressing HIV-1.

Dr. A. Vallance Jones, is now retired from his position as a Principal Research Officer with the National Research Council which he joined in 1968. Previously, he was a Professor of Physics at the University of Saskatchewan. He received his Ph.D. in 1950 from the University of Cambridge, his M.Sc. and B.Sc. in 1946 and 1945 respectively from the University of New Zealand. He is a fellow of the Royal Society of Canada. His work has been primarily in the spectroscopy of aurora and airglow and in other studies of aurora by optical methods. He is a past associate editor (Space Science and Aeronomy) of the Canadian Journal of physics and past Chairman of the Aeronomy Division of the International Association of Geomagnetism and Aeronomy. He also served for a number of years as secretary of the NSERC Grant Selection Committee on Space Science and Astronomy. He is the author of over 100 scientific papers and books on aurora borealis.

Physiologist and test pilot, Melvill Jones won recognition for his pioneer analyses of bail-out stresses, pilot disorientation, and performance in long-duration flight. Later came his classical studies on (1) vestibular dynamics, (2) the vestibulo-ocular reflex (which stabilizes the retinal image during head movement), (3) human responses to vertical acceleration, and (4) the neural programmes involved in landing from a jump, and in dancing and running. Research on neural plasticity has been stimulated by his discovery that the vestibulo-ocular reflex attenuates, and eventually reverses, in volunteers wearing reversed-vision spectacles for several weeks. His advice and research collaboration have significantly influenced U.S. man-in-space programmes.

HAROLD KALANT, Department of Pharmacology, University of Toronto, since 1959 has studied the biological effects of drugs of dependence in the rat. He has demonstrated the acute and chronic effects of alcohol on behaviour, tolerance, dependence, learning ability, metabolism, and functional and organic change. Chronic administration produces a fatty liver, prone to the necrosis seen in man prior to cirrhosis. Necrosis may be aborted by suppressing the thyroid with propyl thiouracil - a possible treatment for human cirrhosis. His more recent work has contributed major new insights into the interaction of pharmacolocical factors with environmental, behavioral and neurobiological mechanisms in the production of drug tolerance and dependence. His work with alcohol and other drugs has earned him international recognition; he has served on several foreign advisory bodies and committees of the World Health Organization. He is co-author or editor of seventeen books concerning drug use, one of which has French and Norwegian editions. He was inducted as a Member into the Order of Canada.

The introduction of muscle-relaxing drugs revolutionized surgery, but a few patients were curiously slow to resume breathing after their operations. Werner Kalow solved that puzzle when he found that the patients had a hidden abnormality: their blood contained the enzyme that usually destroys the drug, but in an atypical form. Kalow worked out the genetics of the trait, and he and others found further examples of the situation. He thus established pharmacogenetics as a new branch of medical science; he wrote the first book about it; and he provided the first clear example of the principle that an enzyme-deficiency disease of hereditary origin may be characterized by alteration rather than absence of the enzyme.

Richard Kane is one of the leading experts on the important area of algebraic topology which studies Hopf spaces. The major achievement in this subject, which originates with work of Heinz Hopf over fifty years ago, is the cohomological classification of finite Hopf spaces. This classification is largely due to J.P. Lin and to Professor Kane, and culminates in their proof of the Loopspace Conjecture, which is the most impressive piece of work in the subject. Undoubtedly the major work in this area is Kane's recent book in which he recounts the details of this classification - a major triumph of modern mathematics and the subject of numerous articles and research papers by Kane over the past decade. The techniques which Kane introduced during this work have found plentiful use in other areas of algebraic topology.

Dr. Kao has led the world in solving central problems in artificial hybridization of plants using tissue culture. His highly innovative contributions have helped Canada to achieve a preeminent international reputation in this field. He pioneered the production of cell cultures from protoplasts and was first to fuse protoplasts using polyethylene glycol. His fusion method is now standard for plant, animal and bacterial cells. Dr. Kao developed the first inter-family somatic hybrid cultures (soybean and tobacco) and demonstrated activity of both parental genomes. Dr. Kao also played a central role in develoloing haploid barley plants through both embryo and anther culture.

Gabriel Karl has made outstanding contributions to theoretical high energy physics, and his work has been widely recognized internationally. His deep physical insight and his knowledge of mathematical methods led to the quark model of baryon resonances, based on quantum chromo-dynamics, which has been enormously successful in describing experimental results. His research is characterized by real originality, and also an ability to combine basic ideas from different fields as in the predictions of a new effect - 'neutron optical activity'. Continually he is invited to visit and address the staff of International Laboratories in his field. For two years he was the chairman of NSERC's High Energy Physics Committee.

Dr. Morris Kates received his Ph.D. degree from the University of Toronto in 1948. His doctoral thesis described the first successful synthesis of a natural phospholipid, dipalmitoyl lecithin. Since 1951 when he joined the Division of Biosciences, National Research Council, and later in 1968 when he transferred to the Dept. of Biochemistry, University of Ottawa, his investigations dealt with the chemistry, biosynthesis and metabolism of lipids in plants and microorganisms. He discovered in membranes of extremely halophilic bacteria a new class of lipids derived from a phytanyl diether of glycerol. Dr. Kates has published two hundred and ten research papers and twenty-one review articles on lipolytic enzymes, and plant and bacterial lipids, and has established himself as one of the leading investigators in this field.