A Treatise on the Comparative Commercial Values of Gas Coals and Cannels

9000 cubic feet ammonia water ammoniacal liquor burner candle gas candle per 1000 cannel gas cannel mixture cannel produces cannel required carbonic acid cent cental charge cloth co-ordinates coal and cannel coal gas coal is worth coal or cannel coal producing 9000 coke at 6d comparative commercial values comparative value cost price crown 8vo curve diagonal diagram Engineers EXAMPLE F. N. SPON Fcap feet of 12-candle feet of 21.3-candle figs formulæ gas coals gas produced graphically hydrogen illustrations inferior qualities Inst lime logarithms material method of valuing mixture will produce naphtha numerous obtained P. L. SIMMONDS plates Practical Treatise price delivered produce 18-candle gas produces 10,000 cubic producing 9000 cubic purify quality of coal quality of gas quantity rectangle represent the illuminating represent the value retorts secondary products series of valuations shale standard cannel station meter Steam strength equal Sugg's Tables tested Twaddel volume weight