Messrs. Merryweather and Son. Messrs. Shand and Mason. Mr. Lee declined to produce his steam fire-engine for trial, alleging various reasons for so doing, and though strongly urged, persisted in his resolution, and declined the contest. Messrs. Merryweather and Son expressed themselves ready to produce their steam fire-engine on the appointed day. Messrs. Shand and Mason informed the Committee that the engine which they had intended to work would not be ready owing to an accident, but requested permission to produce for trial two steam-engines made by them for the London Fire-Engine Establishment, although they were not in the Exhibition. All the arrangements having been made for trying several engines together, the Committee granted this request, as otherwise only one engine would have been present, and a complete table of results could therefore not have been obtained. The Committee assembled in the appointed place at eight o'clock on the morning of the 1st of July, and found three engines present, viz., one of Messrs. Merryweather and Son and two of Messrs. Shand and Mason. After the Committee had examined the boilers and machinery generally, the engine-makers filled their respective boilers with cold water from the river, and fires having been laid, the three were lighted at the same moment, and the makers were ordered to commence working into a tank at sixty feet distance as soon as they had attained a steam pressure of 100 lbs. to the square inch. Messrs. Merryweather's engine attained the pressure named in 12 minutes 10 seconds, Messrs. Shand and Mason's large engine in 18 minutes 30 seconds, the small engine in about 30 minutes, some mismanagement having occurred which compelled them to draw the fire in the latter and light it a second time. Messrs. Merryweather's engine commenced working as arranged when the steam-gauge indicated a pressure of 100 lbs., and was 2 minutes and 50 seconds at work before water passed through the nose-pipe. Notwithstanding this very serious defect, this engine had poured 500 gallons of water into a tank 60 feet distant in 17 minutes and 15 seconds from the time at which the fire was lighted. After the difficulty of drawing the water had been surmounted, this engine worked well, and threw an admirable jet, losing 15 lbs. steam-pressure during the first trial. After three trials this engine became disabled; it was, however, repaired on the ground in about an hour and a half, and resumed work at the ninth trial, continuing to work well until the thirteenth, when it became again disabled, and was withdrawn by the maker, to the great regret of the Committee, who were thus left to continue the experiments with only two engines, both made by one firm. Messrs. Shand and Mason's large engine was 18 minutes 30 seconds getting up steam to 100 lbs., and when started drew water instantly, losing during the first trial 5 lbs. of steam-pressure.