7. A Study on Contraction, Relative Viscosity and Melting Curves of Some Glass-Forming Hydrocarbon Mixtures. 8. Some New Glass-Forming Hydrocarbon Mixtures. 9. A Systematic Study of the Photolysis of Some Dialkyl Disulfides in a Rigid Glass at 77 deg K. 10. The Photolysis of Alkanethiols in a Rigid Glass at 77 deg K with the Possible Formation of Thiyl Radicals. 11. The Photolysis of Iodine, Ethyl Iodide and Hydrogen Iodide in a Rigid Glass at 77 deg K