Part 46

Sugar, 22

Sulphide of iron, 18

Sulphur, 18, 21, 179, 180, 294

Sulphuric acid, 21, 22

Sun, 8, 16, 19, 20

Swan, 129

Syracuse, 19

Syria, 153

Tallow, 34, 35, 51, 52

Tantalum: 132; filament lamps, 133

Tar, 68, 106

Telegraphy, 195

Telephony, 194

Textiles, 256

Thames, 169

Theaters, 9, 319 et seq.

Thoria, 85

Tin, 262

Tinder-boxes, 18, 19, 22

Travelers Insurance Company, 227

Trees, 26

Troy, 42

Tuberculosis, 273

Tungsten lamp, 161 et seq., 187, 261, 290, 303

Typhus, 273

Ultra-violet rays: 126, 150; in photographic electricity, 267, 268; 270, 272, 294

United States: petroleum in, 57; gas-consumption in, 99; 164, 165, 166

United States Geological Survey, cited on sale of gas, 222