INDEX. 



389 



Silicate of lime, 267. 



— magnesia, 267. 



— potash, 263, 549. 



— soda, 263. 

 Silicates, 262—267, 904. 

 Silicic acid, 259. 

 Silicon, 259. 



Silk dyeing, 542. 

 Silver, 294, 314. 



— chloride of, 296. 



— nitrate of, 296. 



— oxide of, 294. 



— salts of, 294. 



— sulphuret of, 294, 297. 

 Size, 593. 



— resin, 539. 

 Skimmed milk, 682. 

 Skin, 689. 



Slaking of lime, 7, 235. 

 Slag, 276. 

 Smells, foul, 186. 

 Smoke 98, 102. 

 Straw ashes, 549, 907. 



— of barley, 916. 



— buckwheat, 934, 



— lentils, 948. 



— maize, 929. 



— oats, 920. 



— rye, 925. 



— vetch, 951. 



— wheat, 907. 

 Strong manures, 800. 

 Sub-salts, HI. 

 Subsoil, 757, 648, 856. 



— • ploughing, 761. 

 Substratum, 758. 

 Suffocation from charcoal, 120. 

 Sugar, 340. 



— barley, 344. 

 — » candy, 345. 



— formation of, 361, 374. 



— of lead, 489. 



— of milk, 570. 



— refining, 344. 



— refiners' waste, 816. 

 Sulphate of alumina, 257. 



— ammonia, 159. 



— copper, 794. 



— iron, 794. 



— lime, 237, 270, 794, 



876. 

 Sulphate of magnesia, 250. 



Sulphate of potash, 213. 



— potash and alumina, 



257. 



— soda, 190, 220. 

 Sulphates, 180. 

 Sulphur, 171, 284. 



— in plants, 775. 

 Sulphuret of iron, 283. 



— lead, 310. 



— silver, 297. 

 Sulphurets, 184. 

 Smelting, 310. 



Soap, 10, 219, 520. 



— boiling, 521. 



— decomposition of, 10, 529. 



— soft, 528. 



— transparent, 531. 



— yellow, 527, 539. 

 Soap-makers' ash, 879. 

 Soda, 189, 215, 218. 



— carbonate of, 218. 



— in rocks, 223. 



— in plants, 547. 



— in soils, 223. 



— muriate of, 216. 



— nitrate of, 217. 



— silicate of, 262, 904. 



— sulphate of, 190, 220. 

 Sodium, 189, 216. 



— chloride of, 190, 216. 

 Soft water, 530, 626. 



Soil, 225, 642. 



Soils, analysis of, 666. 



— color of, 662. 



— composition of, 666. 



— exhaustion of, 748, 912, 986. 



— formation of, 649, 750. 



— mixture of, 668, 758. 



— nature of, 655, 

 Solder, 314. 



Soot, 154, 885. 



Sorrel, 503. 



Soup, 623. 



Specific gravity, 84, 405. 



Spices, 632. 



Spirit proof, 404. 



— pyroxylic, 325. 

 Spirit of salt, 188. 



— wine, 367, 396, 403. 

 Sponge, 447. 



Spring water, 76, 239. 

 Springs, 75. 



