Describes a procedure which identifies an experiment as unreasonably hazardous or indicates precautions to be taken rendering the experiment acceptable for assignment to undergraduate students. The procedure follows in parallel form the procedure used to prepare chemical labels. (Author/JN)

Traces the development of college physics laboratories. Discusses the motivating forces that produced these laboratories, sources of experiments and the first and most influential laboratory manual prepared by E. C. Pickering for use at the Massachusetts Institute of Technology. (JN)

Describes an inexpensive, easy-to-construct manometric device that is a substitute for an expensive commercial transducer that is sensitive to slight pressure fluctuations. An activity for demonstrating the importance of CO-2 as a humoral regulator of respiration is described. (Author/SA)

Discusses how TOPS devices can be improved. New chemistry-physics devices are offered in hopes of encouraging teachers to invent other small devices for projection on a TOPS projector-adaptor. (HM)

Describes a laboratory experiment appropriate for a course in either x-ray crystallography or mineralogy. The experiment permits the direct observation of a polymorphic transition in nickel chromite without the use of a special heating stage or heating camera. (Author/GS)

Described is a gel diffusion experiment that permits the completion of duplicate diffusion runs within a three-hour laboratory session. Information included for the short-duration gel diffusion experiment is the diffusion cell, the experiment, data treatment, and the expected results of the experiment. (Author/DS)

Discusses the new discipline of medical information science (MIS) and examines some problem-solving approaches used in its application in the clinical laboratory, emphasizing automation by computer technology. The health care field is viewed as one having overlapping domains of clinical medicine, health management and statistics, and fundamental…

Outlines a variety of laboratory procedures, discussions, and demonstrations including Brownian motion, a synchronous motor, jet engine, atmospheric pressure vortex ring machines, solid chemical dispensing, testing household detergents, wallchart storage, pollution by industrial chemicals, an optical illusion, and buoyancy. (GS)

Discusses housing facilities for living animals in the classroom or laboratory. The construction of animal cages from materials obtained locally is described. Space recommendations for laboratory animals and cages are also included. (HM)

Discusses the use of compact cassettes in the context of individualized foreign language teaching in laboratory work at the university level. Presents and comments on some technical data regarding the relative merits of cassettes v reels. (IFS/WGA)

Discusses some problem areas as they presently exist in many secondary school laboratories in Australia, and presents some views on how safety in science should be presented to the Australian students. (Author/HM)

Instructions for making a simple respirometer, to measure rates of oxygen consumption of organisms, are presented. The instrument incorporates most of the basic elements of commercial respirometers but can be made inexpensively by high school students. Operating instructions and applications are given. (Author/SA)

A rebuttle to the NSTA publication, "Safety in the Classroom" is given. Opinions of the author are substantiated by research and the references are included. (SA)

This is an account of the discovery of a potentially dangerous high explosive chemical on storeroom shelves of secondary schools in Pennsylvania. A list of guidelines is given to eliminate problems in the future. (SA)

An ebullioscopic apparatus is described in which only the difference between the boiling point of the solution and that of the pure solvent is measured. This substantially reduces the cost of the apparatus and simplifies the operation, while maintaining precision. (BB)