around the world. The first known set was completed by 1823 showing a number of zoological subjects, followed by astronomical slides. These slides were for the day very good but Carpenter and Westley's slides would in time become highly regarded for their detail. To accompany the slide sets Carpenter produced detailed notes in script form allowing presenters to show the images while running through a prescribed text. Carpenter focused on the manufacture of magic lanterns for several years and was successful enough to relocate the business. In 1826 he moved to Regent Street and opened "The Microcosm", a public gallery and shop centred on microscopes. Formation of Carpenter and Westley Philip Carpenter died on 20 April 1833. His sister Mary Carpenter continued the business alongside her husband, Philip's former apprentice William Westley, and the company was renamed "Carpenter and Westley" in 1835. By the 1850s the company's focus had moved more towards sale rather than manufacture, with much of the stock coming from Negretti and Zambra. Carpenter and Westley ceased trading in 1914. References British companies established in 1808 Defunct manufacturing companies of the United Kingdom Optics manufacturing companies