Efforts to establish a library for laboratory instructional materials is being initiated by a group of concerned university educators. The main function of this library will be to collect descriptions of biological systems and supporting materials that are effective in laboratory instruction. Contributors are being solicited. (Author/MA)

Describes two procedures for the conversion of eugenol to vanillin

Describes laboratory equipment which has been modified to accommodate visually handicapped students enrolled in regular university level laboratory science courses. (SL)

Described are the morphology, eating habits, and habitats of three types of Bryozoan colonies. Information on where to collect these organisms and how they can be cultured are included. Suggestions are given for lab experiments that can be done with type three colonies and Euglena. (MA)

Suggests ways in which hens' egg vitelline membranes can be used to demonstrate cell traction effects. Reviews procedures for using and culturing the membranes and identifies topic areas for student projects. (ML)

Outlines a simple method which shows the relation between work done in accelerating a mass and the resulting velocity of the mass. Equipment used includes a rubber ball, ramp of lumber, graph-chart, stopwatch, and hand calculator. (DH)

Reviews three experiments which can be used to introduce microscale techniques. Highlights the benefits and advantages of having undergraduate students prepare and purify derivatives on the small scale. (ML)

Introduces a bubble-making method for discussion about surface tension and thin film interference. Provides some pictures and list of materials for the apparatus. (YP)

Deals with a diffraction experiment using wrapping paper. Provides a magnified picture of the paper, a diffraction diagram, and some instructional information. (YP)

Traces the history of soil mechanical analysis. Evaluates this history in order to place current concepts in perspective, from both a research and teaching viewpoint. Alternatives to traditional separation techniques for use in soils teaching laboratories are discussed. (TW)

Describes a project for junior high and senior high school students designed to safely preserve hard-bodied marine invertebrates. Details the materials and procedures used in this technique. Stresses the use of non-toxic solutions and producing a lifelike specimen. (CW)

Examines the usefulness of cyclic voltammetry to the determination of a complex compound's stoichiometry. Discusses the experimental design, laboratory equipment, and results. (CW)

Describes two complementary laboratory exercises that use the glass fiber assay to assess receptor specificity and hormone binding affinity in rat liver cytoplasmic extracts. Details the methods, materials and protocol of the experiments. Discusses the basic concepts illustrated and the feasibility of using the experiments at the undergraduate…

Describes an experiment to discover the topology of plasma membrane aminophospholipids (phosphatidylethanolamine and phosphatidylserine) using whole platelets and trinitrobenzene sulfonate (TNBS) as a probe. Reports changes in phospholipid distribution during platelet activation with simultaneous action of thrombia and collagen. Details the…

Offers suggestions for the development of a laboratory assistant program. Includes guidelines and factors to consider in the selection process and in the training program. Discusses the advantages of this type of program for both students and teachers. (ML)