1).—6.

Trial of Locomotives between Invercargill and Gore with Nightcaps Coal— continued.

3

Type of Engine. Particulars. Baldwin. Class Q. Glasgow. Class Uc. Glasgow. Class Ua. Baldwin. Class Ub. First importation. Baldwin. Class Ub. Second importation. Baldwin. Class UB. Second importation. N.Z.E. Class Wa. Baldwin. Class Wd. Baldwin. Class Wd. Locomotive Tests : General Results —continued. Water used per square foot of grate-surface lb. per hour running-time Equivalent evaporation per pound of coal from and at 212° F. Weight of coal burned on journey .. „ Actual weight of wood used in lighting-up .. Actual weight of coal used in lighting-up .. „ Total weight of coal and wood used .. „ Coal consumed per ton mile of train-load .. Coal used per ton of train per 100 miles .. „ Weight of coal consumed per hour Average weight of coal burned per square foot „ of grate-surface per hour running-time Coal used per train mile Calorimetric value of coal .. .. B.T.U. Weight of ashes taken from ashpan .. lb. Weight of ashes taken from smoke-box .. „ Weight of ashes, &c, taken out of firebox .. 138-74 6-09 4,613-6 224 784 5,621-6 0-185 18-54 1,116-1 27-90 349-96 6-02 4,7146 224 784 5,722-6 0-189 18-95 1,140-6 71-29 359-97 5-27 5,534 224 784 6,542 0-246 24-62 1,332-1 83-34 344-22 5-75 4,900 224 784 5,908 0-218 21-80 1,185-4 74-09 327-10 6-06 4,371-7 224 784 5,3797 0195 19-45 1,057 6 66-10 317-77 6-04 4,279-5 224 784 5,287-5 0-190 19-04 1,031-2 64-45 366-79 6-29 3,658-7 224 560 4,442-7 0-178 17-79 885-2 70-81 29602 5-75 4,409 224 560 5,193 0-214 21-44 1,066-7 62-75 296-80 5-79 4,406 224 560 5,190 0-21< 21-43 1,066 62-70 Maximum boiler-pressure .. lb. per sq. in. Minimum boiler-pressure .. „ Mean boiler-pressure throughout journey „ Mean temperature of feed-water.. .. deg. P. Mean temperature of atmosphere .. „ Average speed in miles per hour.. Actual time in motion .. .. min. Time made up or lost .. .. „ Number of stops Aggregate intermediate stops .. .. min. 57-67 8,663-8 183 16 66 (all clinker and dirt) 200 165 192-4 46-4 50-9 19-35 248 Nil 5 87 58-93 8,663-8 178 194 39 (all clinker and dirt) 200 171 186-4 46-1 45-5 19-35 248 Nil 5 86 69-18 8,663-8 125 280 9S (all clinker and dirt) 175 103 151-3 463 47-4 19-28 249 Host 5 91 61-25 8,663-8 120 242 57 (all clinker and dirt) 175 132 161-3 47-8 54-5 19-35 248 mi 5 87 54-64 8,663-8 51 257 78 (all clinker and dirt) 175 150 169-9 46 49-1 19.35 248 Nil 5 87 53-49 8,663-8 56 246 95 (all clinker and dirt) 200 180 194-3 47-6 522 19-28 249 1 lost 5 88 4573 8 ,663-8 88 152 40 (all clinker and dirt) 170 120 154-7 51-6 51-3 19-35 248 Nil 5 87 55-11 8,6638 58 223 69 (all clinker and dirt) 170 145-7 164-9 50-6 55-2 19-35 248 Nil 5 87 55-07 8,663-8 50 230 50 (all clinker and dirt) 200 150 189-9 48 1 51-8 19-35 248 Nil 5 87 Analysis of Nightcaps Coal — Fixed carbon Hydrocarbon Water Ash Composition. 43-62 33-68 18-33 437