Describes the construction of a flexible coupled-cavity interferometer for student use. A helium-neon laser and phonograph turntable are the main components. Lists activities which may be performed with the apparatus. (Author/CP)

Describes several oscillating chemical reactions which can be used in undergraduate chemistry laboratories. In one such reaction, ferroin oscillates from red (reducing solution) to blue (oxidizing solution) for about an hour at a frequency which can readily be shown to depend on such factors as the temperature, type of solvent, and concentration…

New apparatus and equipment are briefly described. Sources of materials are given. (MLH)

Presents notes on three physics experiments on (1) light and lenses, (2) determination of the pVT surface of a freon, and (3) use of an eyepiece with microscopes and telescopes. (RH)

Discusses legislation and programs aimed at preventing occupational cancer. Includes the results of recent research in the identification of occupational carcinogens. (MLH)

A survey of 22 popular organic chemistry textbooks showed that only four correctly stated that of the two components of starch, amylopectin is the water-soluble, and amylose is the water-insoluble. (MLH)

Describes a set of biochemistry laboratory experiments in which tetrameric hemoglobin is separated into its subunits then formed again by recombination of the subunits. (MLH)

A method of building mazes with exactly one solution is described. (SD)

A psychology course which uses original experiments to test about research design and validity is described. (DE)

A laboratory course in experimental physiological psychology and animal behavior is described. (DE)

Explains the techniques of experimenting with the protozoan Colpoda cucullus to learn about its habitats, dispersal and adaptations. (LS)

A study compared the relative values of listen-respond and listen-respond-compare language laboratory methods. College-level language students were examined and it was determined that the listen-respond method caused greater comprehension gain. Student recording was found ineffective for first-year students, and may be a definite hindrance. (CHK)