Describes an advanced undergraduate physics experiment which permits the measurement of ultrasound velocity and absorption in liquid systems. A description of the tasks the student is expected to perform is also included. (HM)

Discusses a demonstration in which the near and far focusing distances of a student volunteer are measured and his or her glasses prescription is computed. (HM)

Describes a demonstration in which the local inertial frame of reference can be obtained in the laboratory by allowing a cage to fall freely without rotation under the influence of gravity. (HM)

Reports that a conference for professional chemists, educators in chemistry, and students was held to explore the issue of teaching chemistry to handicapped students. The ideas generated from the participants are intended to be used in preparing a manual of guidelines. (Author/SA)

Describes a laboratory scale reactor that determines the kinetics of a gas-solid catalytic reaction. The external recycle reactor construction is detailed with accompanying diagrams. Experimental details, application of the reactor to CO oxidation kinetics, interphase gradients, and intraphase gradients are discussed. (CS)

Includes annotations of articles from previous issues of this periodical on the following topics: balancing equations and nomenclature, the mole, the silver tree experiment, and history of the periodic table. (CS)

Describes a physical chemistry experiment involving the analysis of the spectrum of benzene vapor in which the resolution in terms of wave length is a limiting factor. (CS)

He-Ne laser experiments suitable for an undergraduate laboratory are described. The topics covered are cavity stability, self-mode-locking coherent interactions between pulses and laser medium, and spontaneous transverse mode locking. (Author/DS)

Instructions are given for care of the giant hissing cockroach, "Gromphadorhina portentosa" from Malagasy. Reproductive behavior is described, as well as development of the young roaches. (SA)

Describes the computer system and potentiometric titration as a simple experiment to illustrate several advantages and pitfalls in using the small computer in laboratory instruction. (Author/JN)

Discusses methods for determining the population size of pond phytoplankton, including water sampling techniques, laboratory analysis of samples, and additional studies worthy of investigation in class or as individual projects. (CS)

Describes methods for building a terraquarium that demonstrates the shore habitat. Includes photographs and a list of materials. (CS)

The learning laboratory of the Training School for Boys, a New Jersey correctional school for eight- to fourteen-year-olds, provides remedial reading instruction through a diagnostic-prescriptive model with the assistance of trained volunteers and interns. (SK)

Describes problems using the Jenkins and White approach and standard diffraction theory when dealing with the topic of finite conjugate, point-source resolution and how they may be resolved using the relatively obscure Abbe's sine theorem. (JN)

Describes methods for studying heart primordia of the chick embryo, using the organ culture method. (CS)