Describes a general chemistry experiment which uses infrared spectroscopy to analyze inorganic ions and thereby serves to introduce an important instrumental method of analysis. Presents a table of eight anions and the ammonium ion with the frequencies of their normal modes, as well as the spectra of three sulfate salts. (RR)

Describes modifications of a commercially available strip-type transmission line, which makes possible reproducible measurements of standing waves on the line. Experimental data yield values for the characteristic impedance, phase velocity and line wavelength of radiation in the transmission line, and the dielectric constant of material in the…

Peritoneal dialysis in anephric is employed as an effective aid in instruction of second year medical students in basic principles encompassed by the field of renal physiology. (IR)

This paper suggests that although there is reasonable evidence to support that portion of the Collins-Quillian theory of semantic memory which hypothesizes that words are ordered hierarchically in memory, there is little evidence in support of their hypothesis of cognitive economy of storage in memory. (Author)

A program devised to involve college sophomores in activities to help residents of a ghetto area is discussed. (CK)

A summary of Soviet research in sleep-teaching and implications for the future. (RY)