enk's improvements in gun-cotton manufacture, 49.

Lewes on the pressure of cordite, 175.

Leibert's treatment of nitro-glycerine, 30.

Lightning conductors for danger buildings, 10.

Liquefaction test for gelatine, 257.

Lodge on lightning conductors, 8.

Lowering of freezing-point of N.G., 21.

Lunge's nitrometer, 219.

Lydite, 156.

Manufacture of gun-cotton, 57.

Manufacture of nitro-glycerine, 17.
cordite, 169.
roburite, 140.
fulminates, 162.
tonite, 84.
di-nitro-benzene, 138.
nitro-starch, 103.
celluloid, 91.

Majendie (Col. Sir V.D.), report on a picric acid explosion, 155.

Maximite, 191.

Maxim's detonator mixture, 165.

M'Robert's mixing machine, 126.

Mechanical equivalent of explosives, 273.

Melinite, 156.

Mono-nitro-glycerine, di-nitro-nitro-glycerine, 41.

Moulding gun-cotton, 77.

Mounds for protection of danger buildings, 6.

Mortar for ballistic tests, 275.

Mowbray on use of compressed air, 15.

Muehlhaeusen on nitro-starch, 4, 5, 103.

Nathan's nitrator, 32.

Nitric peroxide in N.G., 24.

Nitration products of cellulose, 52, 54.

Nitro-glycerine, analysis of, 198.
properties, 17.
nitration, 23.
separation, 35.
washing, 37.
uses of, 41.
manufacture of, 17.

Nitro-benzene, properties and manufacture of, 132, 137.

Nitro-cellulose, 2, 47, 60, 212.

Nitro-jute, 5, 107.

Nitro-mannite, 4, 109.

Nitro-naphthalene, 148.

Nitro-starch, 4, 103.

Nitro-toluene, 132.

Nitrated gun-cotton, 83.

Nitrogen, determination of, Lunge method, 219.
Champion and Pellet's, 223.
Schultze-Tieman, 224.
Kjeldahl-Chenel's, 227.
percentages of in various explosives, 228.

Nitrometers, Lunge, Horn's, &c., 220, 222.

Nobel's ballistic test, 274.

Noble's pressure gauge, 282.
experiments on cordite, 172.

Normal powder, 191.

Oleic acid in glycerine, 236.

Orsman on roburite, 142.

Oxonite, 152.

Oxy-cellulose, 102.

Packing gun-cotton, 78.
dynamite, 116.

Page's regulator, 260.

Panclastite, 152.

Percentage composition of nitro-glycerine, 18.

Perkin on magnetic rotation of nitro-glycerine, 19.

Phenol, tri-nitro-phenol, 152.

Picric acid, 152, 231.
powders, 157, 189.

Picrates, 154, 231.

Polarised light and nitro-cellulose, 218.

Position of the NO_{2} group in nitro-explosives, 2, 3, 16.

Prentice's nitric acid plant, 43.

Pressure gauge, 282.

Primers of gun-cotton, 166.

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