In the tests which were witnessed on April 26, 1902, by Captain I. N. Lewis, Recorder of the Board of Ordnance and Fortification, the engine was held down to a pull of 200 pounds on a 13-inch lever, when running at 1000 revolutions per minute. In the later tests in May, 1903, which were witnessed by Captain Gibson, who was then Recorder of the Board of Ordnance and Fortification, and Mr. G. H. Powell, the Secretary of the Board, the engine was allowed to work at a pull of 265 pounds on the 13-inch lever arm at a speed of 950 revolutions per minute. In the tests made in August, 1904, the engine was run for ten consecutive hours[46] at a pull which varied from 263 to 271 pounds, or an average of 267 pounds, on a 13-inch lever, with the speed varying from 945 to 955 revolutions per minute, thus showing 52.4 horse-power at the average speed of 950 R. P. M. DETAILED WEIGHT OF NEW LARGE ENGINE. Name of Weight in part. grammes. Crank shaft 5,225 Connecting rods (total) 5,005 Pistons-- No. 1 1,652 No. 2 1,647 No. 3 1,655 No. 4 1,660 No. 5 1,646 Cylinders-- No. 1 (including exhaust and inlet valves, oil cups, etc.) 4,768 No. 2 (including exhaust and inlet valves, oil cups, etc.) 4,685 No. 3 (including exhaust and inlet valves, oil cups, etc.) 4,638 No. 4 (including exhaust and inlet valves, oil cups, etc.) 4,637 No. 5 (including exhaust and inlet valves, oil cups, etc.) 4,796