REPORTS OF ASTRONOMICAL OBSERVATORIES. 717 



Paramatta, New South Wales. 



Faramatta Ob.servatori/, (See Sydney.) 



Lougitnde from Greenwich, 10'' 4'" 6^.2 E. 

 Latitude, 33° 48' 4y".8 X. 

 Director: '? 



Paius, France. 



Obserra toire Rationale. 



Longitude from Greenwich, 9'" 21«,02 E. 

 Latitude, 48° 50' 11".8 K 

 Directors : J. D. Cassini, 1<>71; 

 J. Cassini, 1712; 



C. F. Cassini (de Thury), 1756; 

 X D. Cassini (de Thury), 1784; 

 J. J. L. DE La Lande, 1795; 



P. Mechrin, 1801 ; 

 A. Brunard, 1804; 



D. F. J. AraCtO, 1811; 



IT. J. J. Le Yerrier, 1853; 



C. E. Delaunay, 1871; 



TJ. 3. J. Le Verrier, 1872; 



E. MoucmEZ, 1878. 



National Observatory (formerly Eoyal, since Imperial) built in 10G7 

 under the auspices of the Academy of Sciences, according to plans of 

 C. Perrault. a vast central hall; two towers, east and west. In 

 1732, a small room to accommodate a mural quadrant was added beyond 

 the eastern tower, and in 1742 this was extended by a second enclosure 

 for a moveable quadrant. In 17G0 a tiuTet with a revolving roof was 

 built to the south of this addition. The main building having become 

 dilapidated was restored in 1780 — completed 1793 — since when it has 

 been detached and the south terrace built. In 1832 the small room^ 

 where observations are taken were repaired, and the amphitheater 

 and a rotunda with a revolving roof built upon the principal terrace. 

 The dome intended for the shelter of the great equatorial was i)laced 

 on the summit of the building in 1850. The great telescope with a mir- 

 ror of silvered glass — 4 feet (1»'.2) in diameter — was mounted in 1876, in 

 a building on the ground-floor level. John Dominic Cassini discov- 

 ered four of the satellites of Saturn at the Paris Observatory, and also 

 first investigated the subject of the Zodiacal Light, and here, too, the 

 great grandson of this astronomer was the first to follow the variations 



