Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 'Picus varius minor

'Picus varius minor

Britannia is not impressed

Interior of a room in the King's Arms Inn

The Duke of Kent and Lord Mayor of London Sir Matthew Wood advertising a lottery scheme

He and Lady Hamilton are making metaphorical remarks on the subject

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm 'Picus varius minorPlate 24 figure 1 from the paper 'On the construction of specula of six feet aperture; and a selection from the observations of nebulae made with them', by William Parsons, 3rd Earl of Rosse, Philosophical Transactions of the Royal Society, volume 151 (1861) pp. 681 746. A view of the speculum on supporting levers supported on a cast iron rail carriage. The carriage is shown on a turntable situated to the north side of the 72 inch reflecting