ASTRONOMICAL OBSERVATORIES. 451 



Mehan (Tyrol), Austria. 

 A s fro- PliijH ika / iscli cs Observatur inm. 



Lougitiule from Gioc'ii\vi(;li, 



Latitude, — . 



Director : . 



Meudon (Paris), France. 



Obscrvatoirc (VAstronoiiiii: — I'lnjHUiuv. 



Longitude from Greeuwicli, S'" 55.G^ E 

 Latitude, 48° 48' 18" N. 

 Director : J. Janssen, 1 875. 



Instruments : 



A parallactic apparatus beariuii' two twin telescopes to be used con- 

 joiutly ; 1, a photographic telescope of 81 centimeters aperture and 10 

 or 17 meters focal length, for astronomy and spectroscopy; L*, a- i)hoto 

 graphic telescope of the same focus and 02 centimeters aperture. 



A 5-inch photographic telescope (images 30 centimeters). 



A reflector, 1 meter in diameter and 3 meters focal length. 



A series of various instruments for the study of absorption of gases 

 and vapors, scales, etc. 



Mexico, Mexico. 



Obscrvatorio. 



Longitude from Greenwich, j'^ 30"' 20.07^ W. 

 Latitude, 19° 20' 1.3" N. 

 Director : F. Jimenez. 

 M. Barcena. 

 Founded in 1877. 



Milan, Italy. 



B. Osservatorio Astronomico di Brcra. 



Longitude from Greenwich, 30'" 45.97^ E. 

 Latitude, 45° 27' 59.4" N. 

 Directors: L. LagranGtE, 1703. 



F. liEGGio, 1777. 



B. Oriani, 1804. 



F. Carlini, 1833. 



G. V. ScniAPARELLI, 1802. 



The observatory was founded in 1703. [n the beginning it consisted 

 of an octagonal structure to which, in 1775, two side towers were added. 



In 1700 a telescope of 33 feet (10 meters) focal distance was mounted 

 in the College of the Brera by P. Bovio and D. Gerra. 



