680 REPOETS OF ASTRONOMICAL OBSERVATORIES. 



A series of observations of double stars made between 1849 and ] 8G8 

 (cMefly observations of a Centauri, and some of tlie most interesting 

 southern double stars). 



CATHARrxEBURG, Eiissia. 

 Astronomical, 3Iagnefical, and Meteorological Observatory. 



Longitude from Greenwich, 4'' 2'" 48^ E. 



Latitude, 50^ 49' X. 



Authority for latitude and longitude: Kupffee (1841); Fritsche 

 (1873 and 187C) ; Scharxhorst and Kuhlberg (1875). 



Director : G. O. Clerc, secretary Xatural History Society. 



Observers : V. A. Babkix ; 



A. M. Chechulix. 



{b) 2Ieridian transit instrument: makers, Ertel & SoHN (small pas- 

 sage instrument) ; aperture, 1.5 inches, {b') Another by Brauer in St. 

 Petersburg (universal instrument). 



{g) Cloclcs: one mean time; maker, F. Flauth, in St. Petersburg 

 (without Xo.) ; another regulator, without name. 



{li) Chronometers : mean time ; makers, F. Flauth, Xo. 37 ; Wiren, 

 No. 8G. 



(i) Miscellaneous : Magnetic theodolite, Brauer, Xo. 37 ; Brauer's 

 compass for magnetical declination and intensity ; Gambey's inclinato- 

 rium ; variation magnetometers (syst. Gauss) ; several series of me- 

 teorological instruments of difi^ferent construction ; thermometers for 

 observation of the temperature from superficy to three meters depth. 



Observations during the past year : 

 [a) The passage instrument was used every day whenever the weather 

 permitted, for determination of time by observation of the sun. 



Work proposed for the coming year (1881) : 

 Magnetic and meteorological observations ; elaboration of those ob- 

 servations. 



Principal publications of the observatory ditiing the 

 YEAR 1880 : 

 The observatory does not \)v\\ii anything ; all its observations appear 

 in the annals of the central Observatory at St. Petersburg. 



G. O. Clerc: Debacle de la Tchonsdomia (Paiss. and French), p. 83, 

 vol. V, " Bulletin de la Societe ouralienne des sciences natm-elles." 



G. O. Clerc : Translations from German into Eussian, and from Eus- 

 siau into French, in the 5th and 0th vols, of the " Bulletin de la Societe 

 ouralienne des sciences uaturelles." 



