Front Matter
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Sigma Xi News
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RESA Notes
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The Not-So-Impossible Dream: The Presidential Address delivered at the 71st Annual Meeting of The Society of the Sigma Xi, in Palm Springs, California, November 2, 1970
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Views: Man on a Changing Earth: Changes increasingly affect the social and physical environment of man. It is within man's power to shape these changes toward a better world for all
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Views: The Brain of Pooh: An Essay on the Limits of Mind: Advances in genetics have opened up the possibility that man will some day have the potential to change his central nervous system. At the same time we are becoming aware of quantitative limitations of our intellectual capacities
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The Sigma Xi-RESA National Lectureship Program 1970-71 Series—Spring 1971
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Letters to the Editors
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Nerve Cells and Behavior: An understanding of the design of an invertebrate nervous system may shed light on the construction of nervous systems in general
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Sir Charles Lyell and the Species Question: Lyell's reflections on species reveal the gathering crisis in science after 1850 brought about by fossil discoveries, growing knowledge of geographical distribution, and the ideas of Darwin and Wallace
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Ethology and Neurobiology: The ideas and models of classical ethology as seen in light of recent advances in neurophysiology and related fields
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Job Pressures and Research Performance: Contrary to popular opinion, job pressures are not necessarily undesirable; in fact, certain pressures seem to enhance researchers' job attitudes and performance
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Nuclear Gels and Chromosomal Structure: A study of viscoelastic gel formation by isolated cell nuclei is brought to bear on the problem of how mammalian chromosomes are put together
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Shapes of the Future: Physics, botany, and organic chemistry provide illuminating examples of some unsolved geometric problems
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Energy Transduction in Membrane Systems: Repeating units of the inner mitochondrial membrane behave as conformational machines
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Books Received for Review
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Proceedings of the Seventy-First Annual Meeting of The Society of the Sigma Xi: Palm Springs, California, 30 October—2 November 1970
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The Society of the Sigma Xi Report of the Treasurer: 30 June 1969—30 June 1970
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Back Matter
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