146 BULLETIN OF THE UNITED STATES FISH COMMISSION, 



Total number of poniids of combustible 34, 512 



Mean number of pounds of coal per hour 1, 016. 97 



Mean number of pounds of combustible per liour 818. 79 



Percentage of refuse in coal 19. 40 



Mean number of pounds of coal per bour per square foot of grate surface 10. 667 



Mean number of pounds of coal consumed per hour per square foot of beating 



surface 0.4103 



Mean number of pounds of combustible per hour per square foot of grate sur- 

 face 8.589 



Mean number of pounds of combustible consumed per hour per square foot of 



beating surface 0. 3303 



Mean number of strokes per minute of circulating pump 80 



Temperature of the air on deck ." 73. 73 



Temperature of the injection water 65. 73 



Temperature of the discharge water 93. 78 



Temperature of the feed water 76.39 



Temperature of the engine-room 119. 10 



HORSES-POWER. 



Indicated horses-power developed in the starboard H. P. cylinder 93. 460 



Indicated horses-power developed in the starboard L. P. cylinder 122. 240 



Indicated horses-power developed in the port H. P. cylinder 110.224 



Indicated horses-power developed in the port L. P. cylinder 131.602 



Aggregate indicated horses-power developed in the starboard engine 215.700 



Aggregate indicated horses-power developed in the port engine 241. 826 



Horses-power required to work the starboard engine.. 22.116 



Horses-i^ower required to work the port engine 22. 118 



Net horses-power applied to the starboard shaft 193. 584 



Net horses-power applied to the port shaft 219. 708 



Horses-power absorbed in friction of the load on the starboard engine 14. 5188 



Horses-power absorbed in friction of the load on the port engine 16.4781 



Horses-power expended in the slip of the starboard screw 23. 278 



Horses-power expended in the slip of the port screw 26. 838 



Horses-power expended in friction of the starboard screw-blades and shaft on 



the water 21.278 



Horses-power expended in friction of the port screw-blades and shaft on the 



water 21.279 



Net horses-power applied to the propulsion of the hull 239. 642 



DISTRIBUTION OF THE TOWER. 



Percentage of the net power applied to the shaft absorbed in friction of the 



load 7.500 



Percentage of the net power applied to the shaft absorbed in friction of the 



screw- 



blades, hubs, and shafts on the water 10. 297 



Percentage of the net power apj^lied to the shafts absorbed in the slip of the 



screws 12.122 



Percentage of the net power applied to the shafts utilized in the propulsion 



of the hull -• 70.081 



ECONOMIC RESULTS. 



Pounds of coal consumed per indicated horses-power per hour 2.222 



Pounds of coal consumed per net horee-power per hour 3.246 



Pounds of combustible consumed per indicated horse-power per hour 1. 739 



Pounds of combustible consumed per net horse-power per hour 2.613 



Pounds of coal consumed per mile 101. 336 



Pounds of combustible consumed per mile 81.588 



