Lord Rosse's telescope at Birr Castle, Ireland Duke of Kent with the wall of the

with the wall of the lean-to and part of the South front

The centre of the sheet is left blank for writing in

figures 4-7: Acanthosoma hystrix

one sleeps

Lord Rosse's telescope at Birr Castle, Ireland Duke of Kent with the wall of theStereoscopic photograph used to produce Plate 24 figure 5 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. The great telescope seen from the south east, the stage of the first gallery slightly raised. The instrument's scale is demonstrated by groups