Section 16. _carburets_ 211

---- of Iron ... steel 212-214

SECTION 17. Metallic Alloys 218 Alloys of Gold, with other metals 222 ---- Platina, with other metals 226 ---- Silver, with other metals 228 ---- Mercury, and other metals: amalgams 230 Triple, Quadruple, &c. amalgams 236 Alloys of Copper, with other metals 238 ---- Iron, with other metals 253 Alloys of Nickel and Tin, with do. 254 ---- Lead, with do. 258 Triple Alloys, Solders; fusible metal, &c. 263

APPENDIX. Abstract of De la Roche and Berard’s essay on the specific heat of gases 268 ---- Dulong and Petit’s essays, On the expansion of air, mercury, glass, iron, copper, and platina, by heat 272 On the capacities of certain bodies, for heat 274 On the laws of refrigeration 277 On the specific heats of certain bodies 280 Remarks on the above essays 282 New Table of the forces of vapours 298 Table of the expansion of air, and the force of aqueous and ætherial vapour, adapted to atmospheric temperatures 299 Applications of the above table 300 Formulæ for determining the proportions of combustible gases, in mixtures 305 Heat produced by the combustion of gases 309 Absorption of gases by water 309 Fluoric acid--deutoxide of hydrogen 311 Muriatic acid--oxymuriatic acid 313 Nitric acid--compounds of azote and oxygen 315 On ammonia 328 Decomposition of ammonia by nitrous oxide 330 ---- ---- ---- by nitrous gas and oxygen 332 Volume of gases from the decomposition of ammonia 335 Decomposition of ammonia by a red heat 335 Decomposition of ammonia by oxymuriatic acid335 Sulphuret of Carbon 338 Potassium, Sodium, &c. 340 Alum 341 New table of the relative weights of atoms. 352

ADDENDA. Steel; mixed gases; expansion of liquids by heat 354

NEW SYSTEM OF CHEMICAL PHILOSOPHY.

CHAP. V.