Equipment needed for teaching the New South Wales (Australia) Natural Science course in grades 3-6 is listed. A general list needed for all grades is supplemented by lists of materials needed specifically for each grade. Whenever possible materials available from students' homes are listed, and many examples of improvised equipment are given.…

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…

Detailed instructions for the construction of apparatus to detect qualitatively the production of carbon dioxide by respiring organisms are given, with notes on its use and comments on its advantages compared with traditional equipment. The chemistry section of the bulletin contains the results of tests of the efficiency of several laboratory…

Describes experiments which could be performed on an 1860 rotating table apparatus. (CP)

Discussed are strobe photography, making a storage unit, improving a lecture-table meter, and making an electrical discharge tube. (RH)

Lists laboratory instruments and equipment and the names, addresses and telephone numbers of their manufacturers. Manufacturers are listed in alphabetical and numerical order. (GA)

Identifies several pieces of equipment and new products for use in college science teaching such as: (1)rotary retracting microtome; (2)airflow bench; and (3)digital stop clock. A description of each one, the price, and the address of the seller are also presented. (HM)

Includes eleven short notes, comments and responses to comments on a variety of topics such as uncertainty in a least-squares fit, display of diffraction patterns, the dark night sky paradox, error in the dynamics of deformable bodies and relative velocities and the runner. (GA)

Reviews recent developments in the fields of ultraviolet lasers and rare gas lasers. (SL)

Describes the construction of a 30 foot high electrical solar generator by high school students with science teachers as advisors, the students have designed and constructed the generator from spare and scrap materials. (CP)

A photoelectric on-point detector for Winkler oxygen titrations is described. (MR)

Included in this symposium on sampling and measuring particulate matter in a polluted or stack-gas environment were such topics as: improved techniques that give consistently accurate results, reduction in effort and time required to make measurements, and ability to make time-resolved data on emissions. (BB)

Describes a simple self-quenching super-regenerative nuclear quadrupole resonance (NQR) spectrometer. (SL)

Describes the operating characteristics and cost of chart recorders available in Great Britain. (SL)