REPORTS OF ASTRONOMICAL OBSERVATORIES. G89 



Durham, England. 



Observatory. 



fjongitude from Greenwich, G™ 19^8 W. 

 Latitude, 54° 4G' G".2 N. 

 Directors: T. Che vallier, 1840; 

 G. A. GOLDNER, 1872, 

 Founded by subscription in 1840. First observations made in 1842. 



DtJSSELDORF, Prussia. 

 Sternicarte {formerlij named BiU:). 



Longitude from Greenwich, 27'" 5^ E. 



Latitude, 51° 12' 25" N. 



Authority for hititude and longitude : "Astrouoinische Xachrichten" 

 G43, and " Berliner Jahrbucli." 



Directors: J. F. Benzenberg, 1809; 

 F. Brunnow, 1848; 

 liOEERT Luther, 185.j, 



Established in 1809, by J. F. Benzenberg, the savant, who in 1844 

 erected a more complete building at Bilk, Ir^ miles (two kilometers) 

 south of the town. This estabJishmeut, liberally endowed by its founder, 

 became the property of the town in 1847, and was enlarged by it in 1852. 

 Xearly twenty of the mincn- planets have been discovered here. 



Instruments : 



(a) An old repetition circle of one foot, by the late Bat'mann, at 

 Stuttgart, giving 10" of centesimal division. 



{b) Meridian transit instrument nuule by the late Emil Schkoeuier, 

 at Diisseldorf, objective from Munich, focal distance 2 feet, aperture 2 

 inches, little circle divided in half degrees, with nonius, one minute. 



(c) Xew equatorial instrument, made by Charles Bambercj, at Ber- 

 lin, in use since September, 1877, objective by Dr. Sigmund Merz, at 

 Munich, focal distance 7 feet, aperture 7 inches, magnifying powers of 

 eyepieces 49 to 18S, Stars of the 11.5 magnitude can be seen with it. 

 Old reserve tube with horizontal and verti(;al motion, made by Merz 

 & Sons, at Munich, 1847, focal distance G feet, aperture 4.\ inches. Stars 

 of the 11,0 magnitude can be seen with it. 



(n) Two old sidereal time clocks made by Utzsciineider & Frau- 

 enhofer, at Munich. 



(/t) One mean-time chronometer by Kessels, at Altona, and a Swiss 

 watch. 



Some small instruments of minor importance. 

 S. Mis. 31 44 



