REPORTS OF ASTRONOMICAL OBSERVATORIES. 737 



Work proposed for the comog year (1881): 

 Same as 1880. 



Principal publications of the Observatory during the 

 YEAR 1880: 



1. "Meteorologische Beobachtungeii," pablishcd in tlie ''Aiiiialcn <lir 

 Hydrographie," vol. viii. 



"Gezeiteu Tafeln fiir 1881," published by the Hydrographie. Olliee «ji 

 the Admiralty. 



3. Dr. BoRGEN: "Gezeitenstromuiigen iiii Canal uud der Nordsee," 

 published in the "Anualen der Hydrographie," vol. viii. 



4. Dr. Borgen: "Ueber die tiigliehe Ungleiehheit in den Gezeiten," 

 published iu the "Anualen der nydrographie," vol. viii. 



5. Dr. Borgen : "Chronometer Untersuchungen, 1M8-1880," pub- 

 lished iu the "Anualen der Hydrographie," vol. \m. 



6. Dr. Andries: "Ursache des uiedrigen Luftdrucks auf der Siid- 

 hemisphare," published iu the " Zeitschrift fiir Meteorologie," vol xv, 

 p. 53. 



Additional information : 



A time-ball falls twice daily, in local and iu Greenwich noon. Be- 

 sides, the nautical school at Elsfleth receives twice a week telegraphic 

 time-siguals. 



The "Gezeiteu Tafelu" are computed at the Observatory and extend 

 now to 7 German, 6 British, and 2 French ports. The second part, con- 

 taining information about currents, &c., is worked out at the Hydro- 

 graphic Office of the Admiralty, which publishes the w^hole. 



Williamstown, Victoria. 

 Observatory. (See Melbourne. 

 Longitude from Greenwich, 9i' SO'" 38^.8 E. 



Latitude, 37° 52' 7".2 S. 

 Director: ? 



WiLNA, Russia. 

 See Vilna. 



Windsor, N'etv South Wales. 

 Private Observatory. 



Longitude from Greenwich, lO^^ 3- 21».7 E. 

 Latitude, 33o 36' 28".9 S. 

 Director: John Tebbutt 

 S. Mis. 31 47 



