13. Liquids and their Vapours in relation to Radiant Heat. [*]
14. Reciprocity of Radiation and Absorption. [*]
15. Influence of Vibrating Period and Molecular Form. Physical Analysis of the Human Breath. [*]
16. Summary and Conclusion. [*]
III. ON RADIANT HEAT IN RELATION TO THE COLOUR AND CHEMICAL CONSTITUTION OF BODIES. [*]
IV. NEW CHEMICAL REACTIONS PRODUCED BY LIGHT. [*]
1. DECOMPOSITION BY LIGHT. [*]
Physical Considerations. [*]
Production of Sky-blue by the Decomposition of Nitrite of Amyl. [*]
§ 2. ON THE BLUE COLOUR OF THE SKY, AND THE POLARISATION OF SKYLIGHT. [*]