256
Goodyear, 161
Graphite, 258
Guayule, 159, 304
Guncotton, 17, 117, 125, 130
Gunpowder, 14, 15, 22, 234
Gutta percha, 159

Haber process, 27, 28
Hall, C.H., 247
Hare, Robert, 237, 245, 307
Harries, 149
Helium, 236
Hesse, 70, 72, 90
Hofmann, 72, 80
Huxley, 10
Hyatt, 128, 129, 303
Hydrogen, 253-255
Hydrogenation of oils, 202-205, 306

Indigo, 76, 79
Iron, 236, 253, 262-270, 308
Isoprene, 136, 146, 149, 150, 154

Kelp products, 53, 142
Kekule's dream, 66, 301

Lard substitutes, 209
Lavoisier, 6
Leather substitutes, 124
Leucite, 53
Liebig, 38
Linseed oil, 202, 205, 270

Magnesium, 283
Maize products, 181-196, 305
Manganese, 278
Margarin, 207-212, 307
Mauve, discovery of, 74
Mendeleef, 285, 291
Mercerized cotton, 115
Moissan, 259
Molybdenum, 283, 308
Munition manufacture in U.S., 33, 224, 299, 307
Mushet, 279
Musk, synthetic, 96, 97, 106
Mustard gas, 224, 227-229

Naphthalene, 4, 142, 154
Nature and art, 8-13, 118, 122, 133
Nitrates, Chilean, 22, 24, 30, 36
Nitric acid derivatives, 20
Nitrocellulose, 17, 117
Nitrogen, in explosives, 14, 16, 117, 299
fixation, 24, 25, 29, 299
Nitro-glycerin, 18, 117, 214
Nobel, 18, 117

Oils, 196-217, 306
Oleomargarin, 207-212, 307
Orange blossoms, 99, 100
Osmium, 28
Ostwald, 29, 55
Oxy-hydrogen blowpipe, 246

Paper, 111, 132
Parker process, 273
Peanut oil, 206, 211, 214, 306
Perfumery, Art of, 103-108
Perfumes, synthetic, 93-109, 302
Perkin, W.H., 148
Perkin, Sir William, 72, 80, 102
Pharmaceutical chemistry, 6, 85-88
Phenol, 18, 64, 84, 101, 102, 137
Phonograph records, 84, 141
Phosphates, 56-59
Phosgene, 224, 225
Photographic developers, 88
Picric acid, 18, 84, 85, 226
Platinum, 28, 278, 280, 284, 286
Plastics, synthetic, 128-143
Pneumatic tires, 162
Poisonous gases in warfare, 218-235, 307
Potash, 37, 45-56, 300
Priestley, 150, 160
Purple, royal, 75, 79
Pyralin, 132, 133
Pyrophoric alloys, 290
Pyroxylin, 17, 127, 125, 130

Radium, 291, 295
Rare earths, 286-288, 308
Redmanol, 140
Remsen, Ira, 178
Refractories, 251-252
Resins, synthetic, 135-143
Rose perfume, 93, 96, 97, 99, 105
Rubber, natural, 155-161, 304
synthetic, 136, 145-163, 304
Rumford, Count, 160
Rust, protection from, 262-275

Saccharin, 178, 179
Salicylic acid, 88, 101
Sal