Traces some astronomical history and considers how astronomers have arrived at their current knowledge of distance, size, and time as it applies to objects in the night sky. The information is provided as background to a discussion of the Hubble constant and its relationship to the age of the universe. (JN)

This translation of a lecture given in Kyoto (Japan) on 14 December l922 sheds light on Einstein's path to the theory of relativity and offers insights into many other aspects of his work on relativity. (Author/JN)

Surveys eighteenth-century American earth science publications which describe geological phenomena and analyzes them for patterns. Traces the development of geology as a specific field of study in America. (DC)

Historically described are research studies which led to the current explanation of the two kinds of intracellular transport-axoplasmic flow and axoral transport. Models explaining their fundamental mechanism and the kinds of materials they convey are presented. (BT)

Surveys 50 years of acoustical studies by discussing selected topics including the ear, nonlinear representations, underwater sound, acoustical diagnostics, absorption, electrolytes, phonons, magnetic interaction, and superfluidity and the five sounds. (JN)

Relates the biography of one of the earliest U.S. nutrition educators of this century. Cites scientific achievements and educational contributions of E. V. McCollum, including the discovery of vitamin A and the communication of nutrition education to the public. (MA)

Outlines the life of A. G. Vernon Harcourt, a founder of chemical kinetics, contributor to the purification of coal gas from sulfur compounds, inventor of the percentage chloroform inhaler, friend to Lewis Carroll, and instructor to the Prince of Wales. (CS)

Describes how poly(ethylene oxide) was accidentally discovered in the industrial laboratory. (CS)

Discusses several pedagogical merits to teaching geology with a historical emphasis. Describes how concepts of relative time, the field aspects of geology, and the cultural relationships of science can be applied in a historical approach to the subject. Shortcomings to this sort of approach are also mentioned. (CS)

Considers reasons for advocating as well as for objecting to the introduction of science history into chemistry courses at the college level. (CS)

Describes the life of Niels Bjerrum, a Danish physical chemist, best known as the originator of the concept that strong electrolytes are almost completely dissociated into ions in solution. (Author/JN)

Discusses the preparation of the Reptile and Amphibian exhibition at the American Museum of Natural History. Various steps involved in developing the ten showcases in a six-year period are presented. (SA)

Discusses Einstein's contributions to physics and describes how the progress of theoretical physics has been guided by the concepts and methodology of relativity theory. (HM)

Describes the controversy over the hidden variable in quantum mechanics, especially over Bohm's theory, and the criticism and rejection it received as a result of the erroneous application of Von Neumann's impossibility proof, rather than Bohn's theory itself. Concludes that science, especially physics, is not permeated by social factors. (GA)

Briefly discusses the history of major ideas about the universe, such as nebulae, black holes, and the Big Bang theory. (MLH)