Three experiments were designed to clarify the perplexing ability of subjects to discriminate between to-be-remembered (T BR) and to-be-forgotten (TBF) items in memory. Results implicate within-list retrieval of TBR items as a potent tagging or strengthening operation that provides a basis on which those items may later be discriminated from TBF…

Reviews the chemistry of methylmercury, methylmercury poisoning, and its treatment. (SL)

Describes a laboratory experiment to analyze wine for its major components using a standard enological analytical procedure. (Author/GA)

Describes a safe and simple laboratory experiment to polymerise alkenes. Uses a two components catalyst; an unsolveted Grignard reagent and titanium (IV) chloride. (GA)

A phase catalyst approach to nucleophilic and electrophilic reactions is proposed. (CP)

The primary hypothesis examined was that people giving positive evaluations are themselves regarded as more attractive than when they give negative evaluations. Tests whether this holds when reciprocity is not at issue, the situation is realistic rather than role playing, and when there is no possibility of future interaction. (Editor/RK)

A simulation experiment for the dissolution kinetics of steroids is described whose goals are to demonstrate the characteristics of the physical-chemical model for dissolution and to relate the physical-chemical model to the potential therapeutic availability of the drug. Computational details are given. (LBH)

Describes a recording gas microvolumeter constructed to carry out sensitive studies of the kinetics of photodecomposition of water. (SL)

1,242 subjects, in five experiments plus a pilot study, saw a series of slides depicting a single auto-pedestrian accident. These experiments investigate how information supplied after an event influences a witness's memory for that event. Results suggest that information supplied a witness after an event, whether inconsistent or misleading, is…

Describes basic laboratory procedures in a secondary level experiment designed to relate ionic and descriptive chemistry. (SL)

Describes experiments used to illustrate the kinetics of reversible chemical reaction. (SL)

The Utah Superintendency of Indian Affairs experimented with a system of Indian farms to feed the Indians of the territory and to provide a suitable environment for their acculturation. While the experiment served to control and pacify some of the Indians, it did not convert them to the sedentary life of cultivators of the soil. (NQ)

Using the simple optical system and photodiode described in this article it is possible to give clear, quantitative demonstrations of all the Fraunhofer diffraction phenomena at single and multiple apertures. These measurements can be related to the theoretical predictions given in standard textbooks. Circuit diagram and optical layout are…

Describes experiments for determining the dielectric constants of liquids and measuring capacitor dissipation. (SL)

Describes an experiment using flow densimetry for determining the solution concentration in equilibrium with the excess solid solvent present. (SL)