1. Combination of Water with Nitrous Oxide 235 2. —— of Nitrous Oxide with fluid inflammable bodies 240 3. Action of fluid Acids on Nitrous Oxide 244 4. —— of Saline Solutions 245 5. —— of Gases 248 6. Action of aëriform Nitrous Oxide on the alkalies—History of the discovery of the combinations of Nitrous Oxide, with the alkalies 254 7. Combination of Nitrous Oxide with Potash 262 8. Combination of Nitrous Oxide with Soda 268 9. —— —— —— with Ammoniac 269 10. Probability of forming compounds of Nitrous Oxide and the alkaline earths 273 11. Additional Observations 274 12. The properties of Nitrous oxide resemble those of Acids 276 DIVISION II. _Decomposition of_ NITROUS OXIDE _by combustible Bodies_. 1. Preliminaries 278 2. Conversion of Nitrous Oxide into Nitrous Acid and a gas analogous to Atmospheric Air by ignition 279 3. Decomposition of Nitrous Oxide by Hydrogene 286 4. —— —— —— by Phosphorus 293 5. —— —— by Phosphorated Hydrogene 300 6. —— —— by Sulphur 303 7. —— —— by Sulphurated Hydrogene 306 8. —— —— by Charcoal 311 9. —— —— by Hydrocarbonate 313 10. Combustion of Iron in Nitrous Oxide 316 11. —— of Pyrophorus 318 12. —— of the Taper 319 13. —— of different Compound Bodies 321 14. General Conclusions relating to the decomposition of Nitrous Oxide, and to its analysis 322 15. Observations on the combinations of Oxygene and Nitrogene 325 RESEARCH III. _Relating to the_ RESPIRATION _of_ NITROUS OXIDE _and_ OTHER GASES. DIVISION I. EXPERIMENTS _and_ OBSERVATIONS _on the effects produced upon Animals by the respiration of_ NITROUS OXIDE.