738 REPORTS OF ASTRONOMICAL OBSERVATORIES. 



■KA-WEI, Chi 

 Observatory. 



Zi-KA-WEi, China. 



Longitude for Greenwich, 



Latitude, ? 



Director: 1 



Zurich, Switzerland. 



Sternwarte des schweizerischen PolytechniJcums. 



Longitude from Greenwich, 34"" 12«.6 E. 

 Latitude, 47° 22' 40" :N^. 



Authority for latitude and longitude : Astronomische Mittheilungen 

 von Dr. Eudolf Wolf. 

 Directors : J. H. Wasee, 1773 ; 

 J. Feer, 1787; 

 j. eschmann, 1823; 

 Rudolf Wolf, 1860; 

 Assistant : Alfred Wolfer. 



Founded in 1773 upon the Carolus Thurni (Charles' Tower), through 

 the efforts of the Ziirich Society of Naturalists. Abandoned from 1798 

 to 1805. In 1810 a new Observatory was erected east of the Carolus 

 Thurm; this was abandoned in 1852. Finally in 1860 the Observatory 

 was rebuilt at the Polytechnikum, where it was inaugurated in 1863. 



Instruments : 

 [a) Meridian circles : two ; makers, Kern, in Aarau, Ertel, in Munich; 

 diameter of circles, 20 inches ; divided to 2' ; read by 2 microscopes to 

 0.1" ; aperture of objective, 5.3 inches ; magnifying power ordinarily 

 employed, 120.80. 



(c) Equatorial instruments : makers, Kern, in Aarau ; aperture of 

 objective, 6 inches; magnifying power of eye-pieces, 60 to 500. {&) Merz, 

 in Munich, 3J inches ; 64 to 212. 



(d) Spectroscope : one by Merz, in Munich. 



(/) Chronographs: four by Hipp, in ISTeuchatel, and Hassler, in Aarau. 



(g) ClocTcs: meantime; makers, Association ouvriereauLocle; sidereal; 

 maker, Silvain Mairet au Locle. Also several pendulum clocks, among 

 which one by Eepsold. 



(h) Chronometer: sidereal; seconds chronometer; maker, BuZEN- 

 GEIGBR. 



{i) Miscellaneous: Several astronomical theodolites, meteoroscopes, 

 panagenprisms, &c. ; also historical collection of antique instruments. 



Observations during the past year (1880): 

 (a) Time determinations ; refraction, &c.; moonstars. 

 (c) (c') Sunspots ; planets, &c. 

 {i) Shooting stars. 



