704 EEPORTS OF ASTRONOMICAL OBSERVATORIES. 



Liverpool, England. 

 Observatory. 



Longitude from Greenwich, 12°' 17«.2 W. 



Latitude, 53° 24' 4'' K. 



Director : J. Hartnup, 1845. 



Founded in 1838 by the municipal council ; completed in 1848. Trans- 

 ferred to Birkenhead, on the opposite bank of the Mersey, in 1867. It is 

 provided with an apartment for the examination of chronometers, where 

 the temperature can be raised by means of a gas heater, TJie equato- 

 rial is moved hy clock-work, set in motion by hydraulic power. The 

 time-signal is given to the shipi>ing by firing a cannon. 



London, England. 



Private Observatory. 



Longitude from Greenwich, ? 



Latitude, ? 



Director : Mr. George Bishop. (Now discontinued.) 



London, England. 

 Tulse Hill Observatory [ Upper Tulse Hill, London., S. W.]. 



Longitude from Greenwich, 27^7 W. 



Latitude, 51o 20' 47" K 



Director: ? 



Founded, 1856. Altitude, 170 feet above level of the sea. 

 Instruments : 



An equatorial instrument by Grubb, of Dublin, so constructed that 

 either a refractor of 15 inches aperture and 15 feet focal length, or a 

 Oassegrain reflector with metallic speculum of 18 inches aperture may 

 be placed at jjleasure on the same equatorial mounting, so that with 

 either instrument the circles read sufficiently for the finding of objects. 

 The driving-clock has, in addition to the usual governor balls, a second- 

 ary control of a pendulum in electrical connection with a standard 

 clock. 



Up to 1870, when the present equatorial was erected, a transit circle 

 of 34 inches aperture was mounted in the Observatory. At that time 

 the principal instrument the Observatory contained was an 8-inch re- 

 fractor by Alvan Clark, mounted equatorially by Cooke, of York. 



There is a fine sidereal clock by Arnold, and various spectroscopes 

 for use with the telescopes on the sun and stars ; and there has been 



