Discusses the conditions under which stereoscopic photographs and drawings may be produced and viewed, and which will show the results of some experimental work. (DF)

Short articles on the alkylation of aniline, the preparation and properties of perbromate, using scrap copper in chemistry instruction, a safe method of burning hydrogen, and the use of an ion-charge model as an alternative to the mole concept in secondary school instruction. (AL)

Short articles describe techniques for stroboscopic photography of moving objects, mechanical and electronic demonstrations of beats at radio frequencies, simple apparatus for the determination of the specific heat of steam, and the measurement of electrostatic potential by a flame probe. (AL)

The first of two brief articles describes the programming of a traditional English Physics course for the Sixth Form; the second describes the activities and specimens used in an introductory exhibition'' in Nuffield Combined Science at one school. (AL)

Argues that killing animals in biology classes detracts from the true aim of biology teaching--the development of reverence for life. (AL)

Provides instructions for making several miniature substitutes for more expensive supplies and science equipment. (CP)