I.G., see Interessen Gemeinschaft. Immune Functions, 217, 2x8, 232. Imperial College of Science, 97Indigo, 28, 155t 158, 159, 165, x68, 202, 255. Initiative, Struggle for, 111, 121, 1347 273Interessen Gemeinschaft, 18, 32, 86, 89, 109P 148, 149-151, z54, 163, x86, 187, 192, 198, 200, 202, 205, 214, 258-26o, 264-267, 27P. Inter-Allied Chemical Supply Committee, 107-Commission of Control, $5, 264.—Liaison, xo6.—Munitions Council, 107. Intensive Chemical Warfare, 66. International Police Force, 256.

Kaiser Wilhelm Institute, 35, 85, $9. Kalle and Co., 151, Kernmel, attack on, 77, 224, 229. K. Stuff, 41KornmandeurderGastruppen,gi, Krupp's Works, 206.

La Bassie Canal, 76. LachrymatorS, 26, 42, x18, 124, 156, 170, 2171 218. League of Nations, 2r, 127, 259, 246, 247, 255, 256, 258, 26o, 261, 262, 2631 271-273Lens, attack at, 77, 76. Le Rutoire Farm, 43, Leopold Cassella, G.m.b.H., 3151. Leverkusen, 86, go, z4g, r5lt 156-158, L59, z61, 208, 250. Levinstein Limited, x68, 16q. 278

Lewis Gun, 252. Limitation of Armament, 114, 244-248, 254, 264, 265, 267See also Disarmament. Livens Projector, 29, 6o, 41, 65, 90) IOT, 133, 175, 2x6, 227) 228, 245, 252. Longworth Bill, 178. Loos, Battle Of, 43, 50, ix8f 170Ludwigshafen, 88, 151, i56p 159# r6o, x61.

M2, French Mask, 135. March, 19x8, German Offensive, 17, 69, 76, 219, 224Marne, Battle of, 94, 143, 205Mask, first improvised gas, 121. See also Helmet, gas.—German cartridge, see Cartridge Mask, German.—M2 French, see M2, French Mask. resistance of, to breathing, 130, 1311 140MetOl, 203. Minist6re de I'Artillerie et des Munitions, 200. Monchy, attack at, 55. Monopoly, Germany Dye, z8, 38, 148, i8g, 198, 214, 266. Montauban attack, 55. Munitions Inventions Department, 97. Mustard Gas, 27-29, 28, 67, 68, 74, 75, 77, 78, 8r, 89, xig, 136t 1137, 141, 158, 170, 216, 217, 221, 224, 230, 236, 240, 2491 255, 258, 272.—Allied Production, 8o, 81, zo,4, 164Y 165, x68, 171-casualties, 69', 224#

Index

Mustard Gas, defensive use of, 229.—- first use of, 66~ 67, 215.
German production, 158, 202. protection a g a i n I t, 137, 221, 222.
Surprise, 66, 67, 69.

National Health Insurance Commission, 164, 201. Neglect of Chemical Industry,

171, 187New War Chemicals, see War Chemicals. Nieuport, 66, 67, 217Nitric Acid, 171. Nitrogen Fixation, 88, 171s z86, 205, 208, 211-213, 244, 26o, 265, 2671 268, 269. No-Man's-Land, fvture, 227, 229Non-persistent substances, 28, 29. Novocain, 201.

Obstacle, new type Of, 223, 229. Organic Chemical Industry, 145,