This directory lists institutions holding original source material for the history of oceanography, dating from 1600 to 1950. These materials include apparatus, collections of geological and biological samples and specimens, data, documents and written archives, and photographs. For each institution (listed by country), the directory gives name,…

Described is a simple experimental system, which uses radioactive carbon dioxide to study whole leaf photosynthesis under a variety of conditions. Other experiments and simple apparatus for the experiments are also described. (Author/RH)

Photographic essay describes some of the learning facilities for first and second year students at New York's Mt. Sinai School of Medicine. (Author)

Presents a summary of the state of the field in instrumentation as it existed in 1940-1941 as described in articles written at that time by R. H. Muller. (SLH)

Describes the production of an electrophoresis apparatus from commonly discarded articles. Outlines paper and gel electrophoresis and its application to the separation of amino acids and intestinal enzymes. (GS)

This training manual presents material on the use of a compound microscope to analyze microscope communities, present in wastewater treatment processes, for operational control. Course topics include: sampling techniques, sample handling, laboratory analysis, identification of organisms, data interpretation, and use of the compound microscope.…