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The observatory furthermore owns some smaller telescopes, a 12-inchuniversal instrument by Repsolb, a pendulum clock by Kessels, andone by Knoblich, box chronometers, one each, by Kessels, Knob-lich, and Irebe, and a considerable equipment of spectroscopic andother physical, chemical, and photographic apparatus, meteorologicalinstruments, and a set of registering magnetic instruments after theKew pattern.
Two observers were secured for its observatory on the 1st of July,1874, namely: Prof. G. Sporer , formerly teacher of mathematics andphysics, and pro-rector of the gymnasium in Anclam, and Prof. H. C. Vo-gel, formerly astronomer in the observatory of Kammerherr von Billow,in Bothkamp ; Dr. Oscar Lohse, of the same observatory, was engagedas first assistant. Professor Sporer continued in an intermistic build-ing in Potsdam , the solar observations made in Anclam from 1861-1874,and Professor Vogel and Dr. Lohse observed at the Berlin Observatoryuntil spring 1877, when temporary arrangements were made to enablethem to observe in the new institute. Dr. Gustav Muller is em-ployed as assistant since July 1, 1877, and Dr. Paul Kempf sinceJuly 1,1878.
(Translated from, Publicationen des Astrophysikalischen Observa-torium zu Potsdam, Erster Band. Mit sechszehn Tafeln. Potsdam ,1879.)
Observatory of the College of Jesus.
Longitude from Greenwich, 6 h 32 m 41 6 W.
Latitude, 19° 2' 30" N.
Authority for longitude and latitude: A. Lancaster, Liste Generatedes Observatoires et Astronomes, 18S7, p. 49,
Director : P. Spina.
Nicolaevskaia Glavnaia Observatoria.
Longitude from Greenwich, 2 h l m 18.67 s E.
Latitude, 59° 46' 18.7" N.
Directors: F. W. G. von Struve, 1834.
Otto von Struve, 1864.
Founded in 1834. Three principal halls on the ground floor, the east-ern one being used for meridian circle; the western one for the meridiantelescope, and the southern one occupied by the prime vertical. Threerevolving domes, the central and largest containingMERZ and Mahler ’srefractor, which has a focus of 23| feet (7.1 m ), and an aperture of 15Jinches (0.40 m ). A very rich astronomical library. The most elaborateand minute researches on the minor corrections of spherical astronomy,notably the corrections of aberration of nutations and precession, havebeen made chiefly at this observatory.