INDEX. 277 
Soap, boiling, illustration of, 127 
, white, yellow, and soft, of what made, 128 
of glass, what it is, 223 
Soapstone. See Steatite. 
Soda, description and uses of, 126 
__ t carbonat of, 128 
, rauriat of, 129 
, sulphat of, 133 
Solder, of what made, 205 
Soot, uses of, 156 
Spanish chalk, 84 
Spanish white, of what made, 100 
Spelter. See Zinc. 
Stalactites, description and uses of, 112 
Stalagmite, 112 
Steatite, description and uses of, 83 
Steel, how made, and uses of, 192, 193 
, Damascus, what, 192 
, cast, how made, 192 
, how to preserve from rust, 192 
Strontian, 17 
Stucco, of what made, 118 
Sulphur, 19; description of, and how manufactured, 143 
, uses and properties of, 143, 144 
-, singular experiment with, 145 
Sulphuric acid, how prepared, properties and uses of, 145 
Sympathetic ink, how made and used, 222 
T. 
Table slates, how made, 78 
Talc, common, or Venetian, description and uses of, 91 
, indurated. See French chalk* 
Tamarind-tree, petrified. See Woodstone. 
Tartar, emetic, how prepared, 217 
Tea-cups, how to gild, 173 
Tea-urns, how browned, 141 
Thunderbolts. See Meteoric stones. 
Tiles, how made, 72 
Tin, description of, 200 
mines, and steam works, account of, 200 
, how extracted from the ore, 200 
, block, and tin plate, what, and uses of, 200, 201 
putty, how made, and uses of, 202 
, alloys of, 202 
foil, how made, and uses of, 203 
Tin-glass. See Bismuth. 
Tincal. See Borax. 
Turning of iron and copper, how performed, 201 
