Radiation of caloric, i. 52 ----, Prevost’s theory, i. 52 ----, Pictet’s explanations, i. 54 ----, Leslie’s illustrations, i. 61 Radicals, ii. 5. 69 Radicle; or root, ii. 257 Rain, i. 104 Rancidity, ii. 182 Rectification, ii. 223 Reflexion of caloric, i. 54. 64 Reptiles, ii. 349 Resins, ii. 165, 186. 266 Respiration, ii. 317. 326 Reviving of metals, i. 327 Rhodium, i. 14. 348 Roasting metals, i. 316 Rock crystal, ii. 61 Ruby, ii. 53 Rum, ii. 219 Rust, i. 318. 328 S Saccharine fermentation, ii. 208 Sal ammoniac, or muriat of ammonia, ii. 35 ---- polychrest, or sulphat of potash, ii. 91 ---- volatile, or carbonat of ammonia, ii. 41 Salifiable bases, ii. 5 Salifying principles, ii. 5 Saltpetre, or nitre, or nitrat of potash, ii. 32. 104. 116 Salt, ii. 91 Sand, ii. 30. 51 Sandstone, ii. 51 Sap of plants, ii. 165. 260. 262. 270. 272 Sapphire, ii. 58 Saturation, i. 101. Sapphire, ii. 58 Saturation, i. 101 Seas, temperature of, i. 33. Sebacic acid, ii. 75. 182. 290. 353 Secretions, ii. 307 Seeds of plants, ii. 210. 271 Seltzer water, i. 289. ii. 63. 129 Senses, ii. 310 Silex, or silica, ii. 30. 51 Silicium, i. 13. Silk, ii. 359 Silver, i. 321 Simple bodies, i. 10. 12 Size, ii. 281 Skin, ii. 279. 310. 193 Slakeing of lime, i. 147. ii. 56 Slate, ii. 51. 66 Smelting metals, i. 316 Smoke i. 208 Soap, ii. 24 Soda, i. 363. ii. 33 ---- water, i. 299 Sodium, i. 13. 363 Soils, i. 42. ii. 245 Soldering, i. 345 Solubility, ii. 92 Solution, i. 96 ---- by the air, i. 102 ---- of potash, ii. 28 Specific heat, i. 126 Spermaceti, ii. 358 Spirits, ii. 313 Steam, i. 140. 182 Steel, i. 305 Stomach, ii. 315 Stones, ii. 46 Stucco, ii. 65 Strontites, ii. 44. 68 Strontium, i. 13 Suberic acid, ii. 74. 197 Sublimation, i. 257 Succin, or yellow amber, ii. 241 Succinic acid, ii. 74. 197. 241 Sugar, ii. 165. 174. 208 ---- of milk, ii. 355 Sulphats, ii. 5. 91 Super oxygenated sulphuric acid, ii. 70. Sulphat of alumine, or alum, ii. 54. 95 ---- barytes, ii. 58 ---- iron, ii. 96 ---- lime, or gypsum, or plaster of Paris, ii. 95 ---- magnesia, or Epsom salt, ii. 67. 95 ---- potash, or sal polychrest, ii. 91 ---- soda, or Glauber’s salts, ii. 92 Sulphur, i. 256 ---- flowers of, i. 257 Sulphurated hydrogen gas, i. 165. 268 Sulphurets, i. 341 Sulphurous acid, i. 254. ii. 88 Sulphuric acid, i. 74. ii. 265 Sympathetic ink, i. 354 Synthesis, i. 287 T