Abstract
It is shown that the anomalies in the resistivity of rare earth and transition metals and their alloys occurring at intermediate temperatures (e.g. the Woodward-Cody anomaly (1964) in A15 alloys) can be explained within the framework of standard transport theory. The extra resistance at the intermediate temperatures arises because ion cores with d or f electrons in different, nearly degenerate configurations present different scattering cross sections to the conduction electrons.