And subsequent to the person of Számuelly to be able to trace even the faintest glimmer of light reaching the end of the ship, feeding greedily on the appearance of the Congress. [Footnote: In none of these Fragments. ******************** V. ON DUST AND DISEASE. Experiments on Dusty Air. The Germ Theory of Contagious Disease. Parasitic Diseases of Silkworms. Pasteur's Researches. Origin and Character of Radiation. The Aether.