680 . KEPORTS OF ASTRONOMICAL OBSERVATORIES. 



A series of observations of double stars made between 1849 and 1868 

 (cliiefly observations of a Centmiri, and some of the most interesting- 

 southern double stars) . 



Catharinebueg, Russia. 

 Astronomical., 2fagnefical, and Meteorological Observatory. 



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



Latitude, 56° 49' N. 



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

 (1873 and 1870) ; Scharnhorst and Kuhlberg (1875). 



Director: G. O. Clerc, secretary IS'atural History Society. 



Observers: V. A. Babkin; 



A. M. Chechulin. 



(b) Meridian transit instrument : makers, Ertel & Sohn (small pas- 

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

 Petersburg (universal instrument). 



{g) GlocJcs: one mean time; maker, E. Ei.auth, in St. Petersburg 

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



{h) Chronometers: meantime; makers, E. Flautii, Ko. 37 ; Wiren, 

 'So. 86. 



{i) Miscellaneous : Magnetic theodolite, Brauer, jSTo. 37 ; Brauer's 

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

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

 teorological instruments of different construction ; thermometers for 

 observation of the temperature from superiicy to three meters depth. 



Observations during the past ybar: 

 [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 during the 

 YEAR 1880 : 

 The observatory does not print anything ; all its observations apj)ear 

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



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

 vol. V, " Bulletin de la Societe ouralienne des sciences naturelles." 



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

 sian into French, in the 5th and 6th vols, of the " Bulletin de la Societe 

 ouralienne des sciences naturelles." 



