718 REPORTS OF ASTRONOMICAL OBSERVATORIES. 



of tlie magnetic needle with minute and persevering industry ; and 

 it was here that Arago aud Mathieu demonstrated the extremely 

 small parallax of the stars. 



A large number of astronomical manuscripts, containing matter of 

 great interest, are preserved at the Paris Observatory. 



Paema, Italy. 



it. Osservatorio Astronomico. 



Longitude from Greenwich, ? 



Latitude, ? 



Director: *? 



Parsonstown, Ireland. 

 Lord Bosse's Observatory. 

 See Birr Castle. 



PoLA, Austria. 



Kaval Observatory. 



Longitude from Greenwich, 55"^ 23^18 E. 

 Latitude, 44^ 51' 49" Is^. 

 Director : J. Palisa, 1872. 



Founded in 1872. More than a dozen minor planets have been dis- 

 covered here. 



Port Louis, Mauritius. 



Observatory. 



Longitude from Greenwich, ? 



Latitude, ? 



Director: ? 



Potsdam, Brussia. 

 Astro-BhysiJcaUsches Institut. 



Longitude from Greenwich, 52™ 17^ E I 



Latitude, 52° 22' 56" N. 1 



Director : ? 



Observers : Sporer, VoaEL, and Lohse. 



Built upon a hill adjoining the Park at Potsdam. Opened in 1879 

 under the auspices of the Astronomische Gesellschaft. 



