This newsletter is composed of brief notes in the various areas of science. Biology Notes include hazards of tasting Phenylthiocarbamide in laboratory experiments, the use of Albustic and Clinistix test papers for protein and glucose determinations, the measurement of the respiratory quotient, and the construction of a simple respirometer. Physics…

Provides descriptions, including prices and features, of many of the scientific instruments displayed at the 1976 Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy. (MLH)

Briefly described are materials, equipment, and publications related to science. Sources of the items are indicated. (RH)

Articles describing construction of an inexpensive spectrograph, improving focusing of Polaroid cameras, use of space satellites for instruction, and construction of an optics demonstration platform. (RH)

Describes various aspects of chemical laboratory planning and construction, such as distribution of utilities, movable partitions, width of doors and corridors, offices, and communication aids. (MLH)

Various approaches to the standardization of pH meters are compared and the limitations of each are pointed out. (BB)

This section of the product reference guide provides information for locating specific types of equipment used to analyze and control in-plant water and wastewater emissions. (CS)

This article discusses a cataloging and coding system especially designed for language lab courseware. (Author/NCR)

This activity utilizes an overhead projector, a wax pencil, and a petri-dish to demonstrate the depth of field concept to students learning the use of the microscope. Illustrations and directions are included. (MA)

Describes a seven piece modular optical hit which can be utilized to demonstrate different optical instruments and a method for observing interference fringes from the surface of a mirror. (SL)

Describes a device for measuring the absorption of radiation for a quantitative analysis chemistry laboratory course. (SL)

Provides construction diagrams and description of an easily constructed, versatile circuit board. (CP)

Offers suggestions and information on simplifying the construction of the Lehman seismograph. Focuses on factors related to the upper cross-piece, lower cross-piece, boom, damper, coil, and levelers. (ML)

Reviews the potential of a data acquisition system for illustrating the nature and significance of ideas in digital signal processing. Focuses on the fast Fourier transform and the utility of its two-channel format, emphasizing cross-correlation and its two-microphone technique of acoustic intensity measurement. Includes programing format. (ML)