29

H.—44,

APPENDIX E. Analyses ob New Zealand Gases Coal-gas. No. (1), Wellington coal-gas. analysed 16/11/17 ; No. (2), Wellington coal-gas, analysed 17/11/17 ; No. (3), Wellington coal-gas', analysed 28/11/17; No. (4), Auckland coal-gas, analysed 20/11/17 ; No. (5), Christchurch coal-gas, analysed 19/11/17 ; No. (6), Dunedin coal-gas, analysed 26/11/17. ANALYSES. (1.) (2.) (3.) (4.) (5.) ((>.) Carbon dioxide (C0.,) .. .. 3-77 3-38 3-08 4-24 3-80 3-09 Unsaturated hydrocarbons .. 3-51 3-38 3-57 3-50 3-30 3-33 Oxygon (0) .. .. ... 1-76 1-25 1-47 1-37 0-90 1-85 Carbon monoxide (CO) .. .. 9-41 9-37 8-50 10-84 13-80 7-77 Methane (OHJ .. .. .. 22-26 23-51 24-27 25-00 24-50 27-27 Hydrogen (H) .. .. .. 38-46 39-11. 40-14 42-57 42-00 36-07 Nitrogen (N) .. .. .. 20-83 20-00 18-97 12-48 11-70 20-62 100-00 100-00 100-00 100-00 100-00 100-00 Percentage of incombustible gas . . 20-30 24-63 23-52 18-09 16-40 25-50 Calories per cub. ft. (gross) measured at 60° F. and 30 in. pressure .. 116-52 119-43 122-62 127-96 127-10 124-91 British thermal units per cub. ft. (gross) .. .. .. 402-00 474-14 486-80 508-00 500-01 495-89 Analyses of British Casks. (1) Coal-gas supplied by a metropolitan company; (2) mixed gas supplied in the, metropolis (3) gas from Glover West vertical retorts. ANALYSES. (I.) (2.) (3.) Carbon dioxide (CO,) .. .. .. .. .. .. 1-48 1-51 1-00 Unsaturated hydrocarbons .. .. .. . . .. 3-39 5-07 2-85 Oxygen . . .. .. .. .. .. .. 0-20 0-53 0-05 Carbon monoxide .. .. .. .. .. .. 8-17 13-31 8-70 Methane .. .. .. .. .. .. ..31-22 20-17 29-05 Hydrogen .. .. .. .. .. .. .. 49-21 43-02 54-70 100-00 100-00 99-55 Percentage of incombustible gas .. .. .. .. 8-01 11-83 4-25 Calories per cub. ft. (gross) calculated from analysis .. .. 140-39 143-08 142-62 Calorics per cub ft. (gross), from calorimeter .. .. .. 144-50 143-50 1.44-30 Calories per cub. ft. (not), from calorimeter . . . . . . 129-50 127-90 129-60 British thermal units per cub. ft. (gross), from calorimeter .. .. 573-60 569-70 572-90 British thermal units per cub. ft. (net), from, calorimeter .. .. 514-10 507-80 514-50