24 REPORTS OF ASTRONOMICAL OBSERVATORIES. 



Speyee, Bavaria 



Stermcarte des Koniglicheii Lyceum* 



Longitude from Greeuwicli, 33"' 45^6 E. 

 Latitude, 49° IS' 55". 4 K. 

 (No longer iu operation.) 



Stockholm, Sweden. 



Observatory. 



Longitude from Greenwich, 1^ 12°^ 14^ E, 

 Latitude 59^ 20' 33" N. 

 Directors : P. V. Wargentin, 1750 j 

 H. IsiCANDEE, 1776; 

 J. SOANBERG, 1803 ; 

 S. A. Cronstrand, 1828; 

 Is^. H. Lelandee, 1858 ; 

 Hugo Gylden, 1871. 

 Assistants : Aroid Lindhagen ; 

 Freyold Eaistcken. 

 Founded iu 1750. Here Warge]s:tin made that long series of obser- 

 vations on Jupiter's satellites which resulted in the first reliable tables 

 of eclipses of these satellites. 



IlS^STRUMENTS : 



{(() Meridian circle : makers, Ertel & Son ; diameter of circle, 18 

 inches ; divided to 3' ', read by 4 microscopes to 1" ; aperture of object- 

 ive, 4i inches (0.107 meters) ; magnif;^iug power ordinarily employed, 

 124 diameters. 



(b) Meridian transit instrume^it : maker, A. Eepsold; aperture, 2^ 

 inches. 



(c) Equatorial instrument : maker, A. Eepsoldj aperture of objective, 

 7 inches ; magnifying powers of eye-pieces, 114, 150, 190, 302, 600. 



(/) Chronographs ; two. 



(g)ClocTcs: meantime; makers, Molyneux & Cope ; sidereal^ makers, 

 Kessels, Sweder. 



(/() Chronometer: meantime; makers. Dent, Linderoth. 



The following is a translation of portions of a report made by Mr. 

 Hugo Gylden in the "Vierteljahrsschriftder Astronomischen Gesell- 

 schaft," 15ter Jahrgang, 2ter Heft : 



Mention has been made in former reports of two extensive series of 

 observations for the purpose of, firstly, to redetermine all the bright 

 stars between 45° N. declination and the North Pole, which are accessi- 

 ble to our instruments ; and, secondly, to furnish a contribution to the 

 knowledge of the mean distances of stars. 



