482

ASTRONOMICAL OBSERVATORIES .

WolsiSgham, England.

Observatory of the Liverpool Astronomical Society.

Longitude from Greenwich, -.

Latitude, -.

Authority: A. Lancaster, Liste Gen6rale, etc., 1887, p. 63.

Observer: T. E. Espin.

Zacatecas, Mexico .

Observatory.

Longitude from Greenwich, 6 h 41 m 0.67 s W.

Latitude , 22° 46' 34.9" N.

Authority for longitude and latitude: A. Lancaster, Liste G6n6raledes Observatoires et Astronomes, 1887.

Director: A. Jose y Bonilla.

Zikawei, China .

Longitude from Greenwich, -.

Latitude , —-.

Director : Marc Dechevreus.

Zurich, Switzerland .

I. Stermcarte des Schiceizerischen Polytechnikumt.

Longitude from Greenwich , 34 m 12.6 s E.

Latitude, 47° 22' 40" N.

Authority for longitude and latitude: Astronomische Mittheilungenvon Dr. Budolf Wolf.

Directors : J. H. Waser, 1773.

J. Feer, 1787.

J. Eschmann, 1823.

Rudolf Wolf , 1860.

Founded in 1773 upon the Carolus Thurm (Charles Tower), throughthe elforts of the Zurich Society of Naturalists. Abandoned from 1798to 1805. In 1810 a new observatory was erected east of the CarolusThurm ; this was abandoned in 1852. Finally in 1860 the observatorywas rebuilt at the polytechnikum, where it was inaugurated in 1863.

The observatory is mainly used for the practical training of the stu-dents. The scientific results are voluntary contributions by the directorand assistant.

Instruments :

(a) Meridian circles: Two; makers, Kern, in Aarau, Ertel, in Mu-nich ; diameter of circles, 20 inches; divided to 2' • read by 2 micro-scopes to 0.1"; aperture of objective, 5.3 inches; magnifying powerordinarily employed, 120.80.