=NOBEL GELIGNITE.=} Under these names explosives were introduced during the War with modified compositions, the potassium nitrate being replaced by sodium nitrate, and the percentage of nitroglycerine being reduced. =NOBELIT= is a German blasting explosive containing blasting gelatine, carbonaceous substances, inorganic nitrates and sodium or potassium chloride. =AMMON-NOBELIT= contains ammonium nitrate, and the proportion of blasting gelatine is limited to 4 per cent. It may contain sodium or potassium oxalate, and various other substances that are not present in Nobelit. =*NORMAL POWDER.=--A smokeless powder which was said to have been adopted by the Governments of Switzerland, Sweden, Norway, Denmark and Finland. The following analyses were given in “Arms and Explosives,” 1917, p. 91-- Rifle. Shot-gun Powders. _Date of Sample_ 1895 1913 1902 Nitrocellulose, insoluble 93·0 8·8 40·8 ” soluble 3·5 89·4 56·1 Resin 2·0 -- -- Moisture 1·5 1·8 2·0 =NORMANITE.=--A coal-mine explosive which was made by the Cotton Powder Co., and was on the old Permitted List-- Nitroglycerine 33·5 Collodion cotton 1·5 Potassium nitrate 44·5 Wood meal 8 Charcoal 1·5 Ammonium oxalate 11 Explosifs =O= are the chlorate explosives made in the French State factories. O1, O2, O4 and O5 are Cheddites (q. v.). O3 is a Sprengel explosive, and is dealt with under the heading of Prométhée. =OAKLEY QUARRY POWDER= is a blasting explosive consisting of ammonium nitrate and tetryl. =OAKLITE.=--A coal-mine explosive made by the Explosives and Chemical Products, Ltd., which was on the old Permitted List-- No. 1. No. 2. Nitroglycerine 25·5 10 Collodion cotton 1 0·5 Potassium nitrate 34·5 -- Ammonium nitrate -- 79·3 Wood meal 38·7 10 Magnesium carbonate 0·3 0·2 =ODITE.=--A coal-mine explosive which was made by the New Explosives Co., and was on the old Permitted List-- Ammonium nitrate 88 Dinitro-benzene 12 =OPHORITE.=--A mild but hot explosive consisting of-- Potassium perchlorate 60 Magnesium powder 40 It is used as a bursting charge for incendiary shell, smoke bombs, etc. =ORKANIT= is the same as Alkalsit, but may contain sodium chloride and similar salts.