Thomas Atkinson, and Timothy Lightoler (who won the commission). The ceiling draws on contemporary interest in the excavations at Pompeii and Herculaneum, with plasterwork by Giuseppe Cortese. The overmantel plaque of Bacchus and Ariadne riding on a panther was modelled on famous antique cameos illustrated in Pierres Antiques Gravées, published 1724 by Philip, Baron von Stosch and Bernard Picart. This room was again redecorated in the 19th century. Long gallery The long gallery, along the west front of the upper floor, was completed by the end of the 16th century. When Dame Margaret Constable was given leave to 'walke at her pleasure' in 1610, the Long Gallery would have been sparsely furnished, and probably remained as such throughout the 17th century. However, its panelling dates from the late 17th century, as does the marble fireplace. Its elm and mahogany bookcases were installed in the 1740s by Cuthbert Constable, and the neo-Jacobean plasterwork on the ceiling and frieze dates from the 1830s. In 1833, the Clifford-Constables began restoring the Long Gallery, including the acquisition of sphinx tables by Giuseppe Leonardi with tops of specimen marbles by Giacomo Raffaelli. Museums Although it is known that a museum existed in 1774, its location remains a mystery. It was referred to as the "White room adjoining Gallery" in the inventory of 1791, when it housed a number of framed drawings. The present-day Museum Rooms were, according to a plan of 1775, two bedrooms separated by a dressing room. By the 1850s an elaborate theatre had been created in this area, with the outer room serving as an auditorium and the inner room as a stage and fly tower. The Museum Rooms in their present form date from the 1970s, when William Constable's assorted collections of scientific material were recovered from attics where they had been stored since the early 19th century. The museum now displays part of the most substantial Cabinet of Curiosities to be found in any English country house. In 2003, the Burton Constable Foundation purchased an 18th-century telescope which had, before its sale around 1960, been for some two centuries a well-known feature of the house. It was originally acquired by William Constable, who purchased it from the famous York clockmaker Henry Hindley in 1760 for the sum of 100 guineas (£105). It is thought to be the world's first equatorially-mounted telescope. Chinese room The Chinese Room was inspired by visits