490
la Seine, village acetylene mains in, Frank, freezing-point of calcium chloride solutions, preparation of black pigment, purifier, Frankoline, Freezing of generators, of holder seals, Freezing of portable lamps, of pressure-gauges, Freezing-point, depression of by dissolution of acetylene, of calcium chloride solutions, of dilute alcohol, of dilute glycerin, Freund and Mai, copper acetylide, Friction of acetylene, coefficient of, coal-gas, coefficient of, gas in pipes, Frost, effect of, on air-gas, on carburetted acetylene, Froth, lime, in acetylene, Frothing in generators, Fuchs and Schiff, olive oil, Furnace gases for removing air from pipes,
G
Gallon, American, value of, Galvanic action, Garelli and Falciola, depression of freezing-point by dissolution of acetylene, Gas barrel for acetylene, objection to, drying of, engines, acetylene for, escape of, from generators, firing, effects of, volumes, correction of, for temperature and pressure, yield of, from carbide, determining, standard, Gases, calorific value of, effusion of, explosive limits of, flame temperature of, illuminating power of, inflammable properties of, speed of explosive wave in, temperature of ignition of, Gasfitters' paint, Gasholders. See Holders Gatehouse, F. B., test-papers, J. W., estimation of phosphine, Gaud, blocking of burners, polymerisation of acetylene, Generation, dry process of, Generating plant, regulations as to construction of, Generator impurities in acetylene, pressure, utilisation of, sheds, lighting of, smoking in, water, addition of bleaching-powder to, of petroleum spirit to, Generators and holders, isolation of, attention needed by, Generators, charging after dark, chemical reactions in, construction of, copper in, corrosion in, dissolution of gas in, effect of tarry matter in, escape of gas from, failure of, for analytical purposes, for welding, frothing in, frozen, thawing of, gauge of sheet-metal for, heat dissipation in, economy in, produced in, high temperatures and impurities in, instructions