718 EEPORTS OF ASTRONOMICAL OBSERVATORIES. 



of the maguetic needle with minute and persevering industry ; and 

 it was here that Arago and Mathieu demonstrated the extremely 

 small x)arallax of the stars. 



A large number of astronomical manuscripts, containing matter of 

 great interest, are preserved at the Paris Observatory. 



Parma, Italy. 



ji. Osservatorio Astronomico. 



Longitude from Greenwich, ? 



Latitude, ? 



Director: ? 



Parsonstown, Ireland. 

 Lord Bosse''s Observatory. 

 See Birr Castle. 



Pol A, Austria. 



Haval Observatory. 



Longitude from Greenwich, 55°^ 23M8 E. 

 Latitude, 44o 51' 49" ^^. 

 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, 1 



Director: ■? 



Potsdam, Prussia. 

 Astro -Physilxalisches Institut. 



Longitude from Greenwich, 52"^ 17^ E 

 Latitude, 52° 22' 56" N. 

 Director : ? 



Observers : Sporer, Vogel, and Lohse. 



Built upon a hill adjoining the Park at Potsdam. Opened in 187( 

 under the auspices of the Astronomische Gesellschaft. 



