420 ASTRONOMICAL OBSERVATORIES. 



Directors : J. Otto, 1560-1580. 



M. JosTELiN, 1580-1G09. 

 L. Brunner, 1609-1G37. 

 Tn. Hasell, 1G37-1GG1. 

 ToB. Beutel, lGOl-1720. 

 B. Michaelis, 1720-1740. 

 H. EULENBURG, 1740-1743. 



F. Walz, 1743-1747. 

 J. Mayen, 1747-17G8. 

 E. Zeiter, ] 7G8-1783. 



G. KoHLER, 1783-1801. 

 S. Seiffert, 1801-1818. 

 A. Schmidt, 1818-1828. 

 G. LOHRMANN, 1828-1840. 

 R. Blochmann, 1840-1869. 

 A . Drechsler, 1869. 



The Royal Matbematical-Pliysical Institute, an astronomical and 

 meteorological observatory, together with a considerable collection of 

 astronomical, physical, ami mathematical instruments, dating princi- 

 pally from the xvi, xvii, and xviii centuries, had its origin in the 

 cabinet of art which was founded in 1560 by August I, Elector of Sax- 

 ony. 



II. Private Observatorium des Herrii B. von Engelhardt. 



Longitude from Greenwich, 54™ 54.80« E. 

 Latitude, 51° 2' 16.80" N. 

 Director : B. von Engelhardt. 



III. Private Observatorium des Uerrn Dr. Hugo Guericlce. 



Longitude from Greenwich, . 



Latitude, — . 



Director: Dr. Hugo Guericke. 



Drontheim, Norway. 



Observatory. 



Longitude from Greenwich, 41"' 49'* E. 



Latitude, 63° 25' 48" K 



Authority for longitude and latitude : Connaissancc des Temps, 1884, 



p. XX. 



Dublin, Ireland. 



Dunsinh Observatory, 



Longitude from Greenwich, 25'" 21» W. 



Latitude, 53^ 23' 13" N. 



Authority for longitude and latitude : Dr. Brunnow. 



