Discussed are past work and recent advances in the use of electron microscopes for viewing structures immersed in gas and liquid. Improved environmental chambers make it possible to examine wet specimens easily. (Author/RH)

Suggests that overproduction of offspring by early human populations would have tended to work to the selective disadvantage of the entire society. Decisions regarding population limitations have been highly personal ones based on the amount of short run effort that individuals were able and willing to invest in each child. (GS)

The author explains that misunderstanding the role of science and scientists is mainly due to a communication gap precipitated by the enormity of the field of science. Among the many examples given are cloning and DNA from biomedical research. Argues strongly against establishing an agency to control the field of scientific research. (GA)

Reviews the vascular anatomy of the pituitary and discusses a series of 14 questions concerning the functional implications of these anatomical observations. Together these questions attempt to identify whether pituitary hormones are transported directly to the brain to modify brain function. (HM)

Discusses the problem of whether an explanation of the phenomena of life can be deduced from an exclusive reliance on causal relationship. Indicates that this exclusive reliance is not valid and adds the concept of anticipation. (GS)

Included is a list of laboratory instruments and equipment and the names and addresses of their manufacturers. Names of instruments appear in alphabetical order in heavy black type and the names of manufacturers of each instrument appear below each instrument entry in ordinary type. Each instrument is identified by a "category number." Unnumbered…

Nineteen normal male subjects received one milligram of physotigmine or one milligram of saline by slow intravenous infusion on two nonconsecutive days. Physostigmine significantly enhanced storage of information into long-term memory. Retrieval of information from long-term memory was improved. Short-term memory processes were not significantly…

Discusses the optimality of natural selection, ways of testing for optimum solutions to problems of time - or energy-allocation in nature, optimum patterns in spatial distribution and diet breadth, and how best to travel over a feeding area so that food intake is maximized. (JR)

Describes the organization of university education and scientific research (mainly biological) in China. There appears to be an emphasis on applied research and on the elimination of elitism from scientific, technical and intellectual activity. (AL)