118 REPORT— 1868. 
Taste 1X.—Condensed Table of trials of H.M. Steam Line- 
Date of trial March 16. March 24. 
Ship’s course S.W. by W.| W. by N. 
Wind’s direction Westerly. Southerly. 
i I 1to2 
Smooth. Smooth. 
Mean draft of water 5 23°54. 
Displacement, in tons . 5000" 
Area of midship section, in square feet : 1040" 
Average speed per hour, in knots 
Duration of trial, in hours 
Steam cut off in proportion of stroke 
Average number of revolutions 
Pressure of steam near cylinder, in lbs 
Mean pressure on piston, in lbs 
Barometer (fore), in inches 
Barometer (aft), in inches 
Indicated horse-power 
Speed of screw, in knots per hour 
Slip, in knots per hour 
Slip, per cent. 
Number of furnaces at work in the boiler... 
Grate-surface at work, in square feet 
Heating surface at work, in square feet 
Pressure of steam in the boilers, in lbs 
Consumption of coals, in ewt. per hour 
Consumption of coals, in ewt. per knot 
Consumption of coals, per I. H. P. per hour 
Distance run with 1 ton of coals 
Description of sail set 
Foul bottom. 
