GENERAL INDEX. 
Silicoborocalcite, 212. 
Sillimanite, 285. 
Silt, 429. 
Silver, 116, 121. 
Compounds of, 216. 
glance, 117. 
Sinter, Siliceous, 240. 
Sipylite, 202. 
Sisserskite, 127. 
Skutterudite, 166. 
Smaitite, Smaltine, 165. 
Smectite, 807, 312. 
Smithsonite, 156. 
Snow, crystals of, 4. 
Soapstone, #04, 454. 
Soda nitre, 229. 
Sodalite, 270. 
Sodium, Compounds of, 223. 
Sommite, 269. 
Spaniolite, 136. 
Spathic iron, 185. 
Spear pyrites, 174. 
Speckstein, v. Steatite. 
Specular iron, 176, 455. 
Speculum metal, 144. 
Spelter, 158. 
solder, 144. 
Spessartite, 258. 
*Spherosiderite, 186. 
Sphalerite, 154. 
Sphene, 290. 
Spherocobaltite, 168. 
Spilite, 451. 
Spinel, 194, 204. 
Spinthere, v. Titanite. 
Spodumene, 248. 
Stalactite, 216. 
Stalagmite, 216, 4382. 
Stannite, 159. 
Staurolite, Staurotide, 291. 
Steatite, 304. 
Steatyte, 454. 
Stephanite, 119, 121. 
Stercorite, 231. 
Sterlingite, ». Damourite. 
Sternbergite, 118. 
Stibnite, 100. 
Stilbite, 802. 
Stilpnomelane, 307. 
Stinkstone, 217. 
Stolpenite, 307. 
Stolzite, 151. 
Strakonitzite, 295. 

Stratopeite, 316. 
Strengite, 185. 
Strigovite, 316. 
Stromeyerite, 118. 
Strontianite, 228. 
471 
trontium, Compounds of, 220. 
Struvite, 231. 
Stiibelite, 316. 
Stylotypite, 136, 149. 
Succinum, 325. 
Sulphate, Aluminum, 197, 198. 
Ammonium, 231. 
Barium, 220. 
Calcium, 210, 211. 
Cobalt, 168. 
Copper, 137, 188. 
Iron, 182. 
Lead, 150. 
Magnesium, 205. 
Nickel, 168. 
Potassium, 227. 
Sodium, 226, 227. 
Strontium, 222. 
Uranium, 171. 
Zinc, 156. 
Sulphide, Antimony, 100. 
Arsenic, $9. 
Bismuth, 102. 
Cadmium, 159. 
Cobalt, 164. 
Copper, 132, 183, 124. 
Tron, 172, 174. 
Lead, 145, 149. 
Manganese, 188. 
Mercury, 128, 180. 
Molybdenum, 96. 
Nickel, 164. 
Ruthenium, 127. 
Silver, 117, 118. 
Tin, 159. 
Zinc, 154, 155. 
Sulphur, Native, 37, 94. 
Sulphuret, see Sulphide. 
Sulphuric acid, 96. 
Sulphurous acid, 96. 
Sunstone, 277, 279. 
Susannite = Rhombohedral Lead- 
hillite. 
Sussexite, 206. 
Syenites, 445. 
Syenyte, 445. 
gneiss, 446. 
Sylvanite, 116, 118. 
