REPORTS OF ASTRONOMICAL OBSERVATORIES. 733 



P. Slavinski, 1824; 

 M. KLOUSCiiNEViTcn, 1841 ; 

 G. A. VON Fuss, 1848; 

 G. Sabler, 1854; 

 Colonel Peter Mysloff, 18G7. 

 Assistant: Fried. Wilhelm Berg. 



It seems that this Observatory had already existed for some time, 

 when in 1704 Poczobut restored it and replaced its instruments. Its 

 labors, suspended during the Eevolution, were not resumed until 1803. 

 Instruments : 



(b) Meridian transit instrument : maker, Eamsden, in 1777; aperture, 

 4 inches ; magnifying ijower, 40 diameters. 



(c) Equatorial instrument: maker, Eamsden, in 1777; aperture of ob- 

 jective, 4 inches; magnifying powers of eye-pieces, 40 and GO. 



{(1) Spectroscope: direct vision, maker, S. Merz, at Munich. 



[e) Photometer: made by the late Prof. L. Schwerd, at Speyer. Of 

 the three made by him one is in Bonn, and the other in Pulkowa. 



(/) Chronograph : maker, Ansfeld, at Gotha. 



{(/) CloclxS: one, mean time, maker, Shelton, (London); one sidereal, 

 maker. Hardy, (London, 1819). 



{h) Chronometer: one, mean time, maker. Dent, Xo. 2796; one, 

 sidereal, maker, Dent, No. 2000. 



(i) A Heliostat, by S. Merz. Various ancient astronomical instni- 

 ments, and modern meteorological instruments. The library of the 

 Observatory contains 1,960 works, in 4,181 volumes. 



Observations : 

 From 1869 to 1876, photoheliographical observations, in the same 

 manner as at Kew, near London. In the year 1876, the heliograph, by 

 DALL31EYER, Loudou, was destroyed by lire. Meteorological observa- 

 tions are made four times a day: at 7*^ A. m., 1'^ p. m., 9^^ P. i\i., and l^" 49"^ 

 P. M. (=7^ mean Washington time, A. m). 



Warsaw, Russia. 

 See Varshava. 



Wellington, Neu\ Zealand. 

 Government Observatory. 



Longitude from Greenwich, 



Latitude, "? 



Director : ? 



