Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Fitzailwin Zoological study showing a specimen

Zoological study showing a specimen of freshwater hydra (figure 1) with structural details (figures 2-4)

surmounted by a view of the Coronation Chair and 15th century stone screen in Westminster Abbey

or mistress

March 1992 DM-1894-313

Telescope speculum for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Fitzailwin Zoological study showing a specimenPlate 24 figure 2 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 Parsonstown 72 inch