Describes a method in which metals can be identified by the direction of the e.m.f. generated when the junctions in a circuit containing two dissimiliar metals are at different temperatures. (MLH)

The use of atomic absorption techniques to determine heavy metals in trace amounts is demonstrated by analyzing a solution of human hair digested in nitric acid. (MLH)

Teachers, supervisors, and teacher educators who participated in the 1968 NDEA Title XI Institute developed experiments and instructional units to be used by industrial arts and technical education teachers. The program involved a study and development of industrial materials, field testing, and the preparation of transparencies and slides. The…