One was erected recently upon the new principle, of which the cost was something under £5000, including 12 bells weighing from five to seven cwt. each, clock, architect's charges, gas-fitting, and £1200 for timber-trussing, floors, &c. The Carillon machine is let off by the clock and plays seven times on the ringing peal of bells, but is adapted to play twenty-eight tunes on fifteen bells. It is wound up every morning and plays eight times in twenty-four hours, _i_. _e_. once every three hours, giving the tune on each occasion three times, and occupying about four minutes in doing so. At the expiration of the 24 hours the tune changes involuntarily, and of course with seven tunes there is one for each day in the week. The Carillon machinery is connected with the clock and set in motion thereby, by a lever which at three hours' intervals dislodges a pin and allows the weights, 14 cwt. each, to act upon the machinery, the speed being easily regulated, as in clockwork, by revolving vanes. The barrels are five feet long, by one foot in diameter, and are studded with brass pins like that of a musical box. When the bells are required to be rung, a bar is turned down on the keys which prevents the motion of the machinery for any length of time that the ringing is to be continued. Notwithstanding that the twenty-six hammers weigh from 2 cwt. to 70lbs each, it is possible that the tunes could be played by means of an ivory keyboard, as in a church organ, and with almost as much ease and facility. Persons requiring to know the cost of a Church or Turret Clock should furnish the Clockmaker with the following data:--