BENNETT'S MODEL WATCH, as shown at the GREAT EXHIBITION, No. 1. Class X., in Gold and Silver Cases, in five qualities, and adapted to all Climates, may now be had at the MANUFACTORY, 65. CHEAPSIDE. Superior Gold London-made Patent Levers, 17, 15, and 12 guineas. Ditto, in Silver Cases, 8, 6, and 4 guineas. First-rate Geneva Levers, in Gold Cases, 12, 10, and 8 guineas. Ditto, in Silver Cases, 8, 6, and 5 guineas. Superior Lever, with Chronometer Balance, Gold, 27, 23, and 19 guineas. Bennett's Pocket Chronometer, Gold, 50 guineas; Silver, 40 guineas. Every Watch skilfully examined, timed, and its performance guaranteed. Barometers, 2l., 3l., and 4l. Thermometers from 1s. each. BENNETT, Watch, Clock, and Instrument Maker to the Royal Observatory, the Board of Ordnance, the Admiralty, and the Queen, 65. CHEAPSIDE. * * * * * Printed by THOMAS CLARK SHAW, of No. 10. Stonefield Street, in the Parish of St. Mary, Islington, at No. 5. New Street Square, in the Parish of St. Bride, in the City of London; and published by GEORGE BELL, of No. 186. Fleet Street, in the Parish of St. Dunstan in the West, in the City of London, Publisher, at No. 186. Fleet Street aforesaid.--Saturday, April 15. 1854. * * * * * Corrections made to printed original. page 358, "I find that, by treating box sawdust": 'It find that' in original. page 361, "unimagined system of criticism": 'sytem' in original.