Dr. Peta Mudie is an outstanding palynologist making superb contributions to the solution to a wide range of geological oceanographic and climatological problems. She made the first modern palynological study of the oceans and sediments of the northwestern Atlantic Ocean and its bordering lands and seas, and so she could make the first comprehensive synthesis of the events marking the onset of cooling and glaciation in high latitude regions of the northwestern Atlantic and the Arctic Ocean. She applied this foundation to solve many problems involving past climates and oceanographic conditions of the northern oceans and the Arctic using data teased from the geological record, data extracted under difficult conditions at sea and on the Arctic pack ice.

Outstanding taxonomist and Chief of the Insect Taxonomy Section, Entomology Research Institute, Ottawa, Dr. Munroe's research is mainly on a major group of moths (Pyraloidea). He uses his studies on the calssification of the world fauna of this group as a background for more fundamental contributions to evolution and biogeographical theory. Widely travelled and unusually well-informed on disciplines ancillary to his specialties, his professional opinions are widely sought and he participates extensively in the activities of national and international organizations. He has published about 126 papers, mostly on his research, and is the author of several major monographs. His work is noted for its breadth of conception, its extent and variety, technical and literary polish, and for its creative content.

Robert George Everitt Murray, B.A., M.A., M.D., L.M.C.C., was first appointed in 1945 as Lecturer in the Department of Bacteriology and Immunology at the University of Western Ontario and quickly rose to positions of increasing responsibilities until in 1949 he became Professor and Head of that Department. Research-minded to an unusual degree, and possessing wide scientific vision, Dr. Murray has brought distinction to himself through his basic studies on the cell structure of bacteria. Special reference may be made to his comparative studies of the cytology of bacteria of different generic groups and his notable work on cytological effects of infection of bacteria with bacteriophage. He has contributed in an outstanding degree to the methodology for differentiating the components of the bacterial cell and in the use of electron microscopy for elucidating the cell structure and composition of micro-organisms.

Kumar Murty is a mathematician of exceptional range. He has made important contributions of analytic number theory and albebraic geometry. For instance, he proved the Hodge Conjecture for a class of abelian varieties and, with Ramakrishnan, established the Tate Conjecture for certain Hilbert modular surfaces. Further, in joint work with Balasubramanian he obtained striking new results on the non-vanishing of Dirichlet L-functions. In addition, with his brother, Ram Murty, he proved a result on L-functions which, together with the work of Kolyvagin, gave an inportant step towards the proof of the Birch-Swinnerton-Dyer conjecture in the theory of elliptic curves.

Dr. Mysak has made some notable contributions in the application of mathematical techniques to oceanographic problems. His analysis of ocean waves has given insight into innovative ways of forcasting fish migrations. In physical oceanography he is one of the leading experts on large-scale interannual fluctuations in ocean parameters caused by various meanders and eddies in ocean currents. He has published over 80 scientific papers on various oceanographic subjects since receiving his Ph.D. in 1966.

A distinguished career at Cambridge and Queen's University led Tony Naldrett first to study nickel sulphides and silicates at the Carnegie Institution of Washington, from an experimental point of view, then to the field, in particular the Sudbury nickel mines. Penetrating studies there led to new insights into the history of the Sudbury meteorite impact and subsequent development of the nickel-copper ores. His well-equilibrated melange of field, microscope and thermodynamic approaches to modern mineralogy and petrology have more recently led him further afield to look generally at the evolution of ultramafic and mafic rocks in the early Archaean crusts of many parts of the world. His distinction as a modern economic geologist and petrologist is matched by his gifts as a teacher and clarity of verbal expression, which are renowned wherever he has lectured.

Ernest Richard Ward Neale, Ph.D., Head, Appalachian Section, Geological Survey of Canada, Ottawa, did his early field work with the Québec Department of Mines. After receiving the doctorate degree from Yale in 1952, he continued summer work in Quebec and accepted a teaching post at the University of Rochester. He joined the Geological Survey of Canada in 1954 and was appointed Head of the Appalachian Section in 1959. In the short time since then he has transformed a group of individual scientists, each intent on their own problems, into a well co-ordinated scientific unit that, as well, looks critically into all regional phases of Appalachian geology. He has amply displayed the qualities both for leadership and for scientific research.

Dr. Newcombe, B.Sc. (Acadia) and Ph.D. (McGill) has been on the staff of Atomic Energy of Canada Limited for Thirty-two years. His extensive publications demonstrate his broad interests in biology, especially in genetics and radiation genetics. In this last subject, he is the foremost investigator in Canada and is considered a world authority. His researches made significant additions to our knowledge of mutations in bacteria and viruses. For the past five years he has been pioneering in a study of human genetics by extracting information from vital statistics with modern data handling machines. Dr. Newcombe's advice on problems of genetics and radiobiology has been so widely sought that he is a member of several expert committees of Canada, the United States and international organizations.

During a long career, with segments at Imperial College London, the University of Western Ontario, and York University, the principal thrust of Dr. Nicholls' researches, and those of his many students and collaborators has been the diagnostic interpretation of intensity profiles of emission and absorption molecular spectra, from laboratory, atmospheric, space and astrophysical sources in terms of the physical conditions which exist in them and the energy transfer processes which maintain them. The experimental/observational aspects of this work has involved the study of laboratory spectra excited in shock tubes, ion beams and combustion sources as well as with the participation in Canadian and International rocket and satellite projects. The theoretical aspects of the work has involved extensive quantal studies of many properties of space molecules to provide definitive molecular transition probability data needed for diagnostic purposes.

PETER N. NIKIFORUK, Dean, College of Engineering, University of Saskatchewan, has made important contributions to the field of automatic control systems. His main areas of research are adaptive and electrohydraulic control systems. He pioneered analytic and experimental work on the response of nonlinear control systems to random inputs, and was one of the first to perform closed loop digital simulations. More recently, he and co-workers contributed to broad area of frequency and time domain response of control systems. He has published or co-authored over 250 papers, several of which have received prizes - the most recent was the Kelvin Premium from the Institute of Electrical Engineers (UK).

Jerome 0. Nriagu is one of the world's foremost geochemists. He is widely known for his contributions to the understanding of the geochemistry of sulfur and toxic trace metals. He has written or edited 22 books and over 130 research papers on these and related topics. Dr. Nriagu's use of sulfur isotopes to elucidate important features of the sulfur cycle have been especially important in our understanding of the biogeochemistry of acid rain and arctic haze. He has been a key individual in the fight to reduce the contamination with lead of ecosystems and human food and water. Dr. Nriagu has been a member of the U.S. National Acaderny of Sciences' expert panel on lead. He is a senior research scientist at the National Water Research Institute in Burlington, Ontario.