Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm and this is why Parnell

and this is why Parnell is depicted as a deer-stalker

In 1899 Louis Renault had founded Renault Fréres with his older brothers

The entomologist and artist Maria Sibylla Merian travelled to Surinam in South America from 1699-1701

in the following Session

Telescope speculum grinding tool for Lord Rosse's 72-inch telescope at Birr Castle, Ireland Size:L: 100 x 80cm and this is why ParnellPlate 24 figure 3 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 rear view of the cast iron grinding tool used to produce the speculum (mirror) of the reflecting telescope at Birr Castle, Parsonstown, Ireland. The circular tool is shown suspended