Methods have been developed for measuring several of the physical properties of pure, freshly deposited carbide-iodide thorium over a range of temperatures without exposing the metal to atmospheric or other contamination. The allotropic transition of such material has been located at 1325 ~ _ 10~ the transition from fcc thorium to bcc thorium being complete at 1335~ in less than 1 min. New values are given for the electrical resistivity and total emissivity of thorium, these properties being markedly influenced by impurities in materials used by previous investigators. The morphology of the deposits has been studied and related to the composition and physical properties of the metal.