ASTRONOMY FOR 1889, 1890. 165 



Dnrclimusteriiug of tbe uortbern sky ; observations of sun spots. Tbe 

 new refractor for tbe pbotograpbic star cbart is erected and some ex- 

 l)erimeutal work bas been done. (1889.) 



Prag: Safarik. — Double-star measures; drawings of tbe moon; 

 cbietly devoted to observations of variable stars. (18S9.) 



Prag (University observatory): We'mel-. — Drawings of moon; occul- 

 tatious. Time service. (L889.) 



PuLKOWA : Bredichin. — Prof. Otto Struve retired from tbe direct- 

 orsbip of tbe observatory, wbicb be bas beld for over 25 years, and bas 

 been succeeded by Dr. Bredicbin, formerlj' director of tbe observatory 

 at Moscow. Tbree volumes were issued in 1889: Volume 8 containing 

 tbe catalogue of Bradley's stars, a volume containing an investigation 

 by Lindemann of tbe pbotometric scale of tbe Bonn Durcbmusterung, 

 and tbe tbird volume, tbe " Jubilee" volume, witb an bistorical account 

 of tbe observatory for 25 years, a monograph on the 30-incb refractor, and 

 a description of tbe astropbysical observatory. Tlie volume contains 

 several fine engravings of the observatory and oOincb. (1889-'90.) 



Kadcliffe : Stone. — Transit-circle observations of tbe zone 0O-15°, 

 and of tbe sun and moon. 



EoME: Denza. — Tbe new observatory of tbe Vatican bas been built 

 partly upon tbe site of tbe old observatory, founded in 1582, and ])artly 

 upon a tower dating from tbe time of Leo IV. Special attention will 

 be given to astronomical photography. 



RousDON (Lyme Regis) : Peek. — Observations of variables. Time 

 service. 



Stockholm : Gylden. — Largely engaged in mathematical researches 

 upon orbits. Photographs have been taken of tbe Pleiades and of a 

 region extending about 4° around tbe north pole. (1889.) 



Stonyhurst: Sidgreaves. — Father Perry, whose sad deatb immedi- 

 ately after observing tbe total eclipse of tbe sun on December 21, 22, 

 1S89, has been elsewhere referred to, bas been succeeded in tlie direct- 

 orship of the observatory by Father Walter Sidgreaves. (1889.) 



Strassburg : E. Becker. — Observations of comets and heliometer 

 measures of the sun's diameter ; also transit-circle observations of the 

 sun and major planets. 



Sydney: Russdl. — Transit circle observations, and with the Hi inch 

 equatorial observations of comets and of double stars. The photo- 

 graphic telescope for chart work has been mounted upon an elevated 

 site G20 feet above the sea and 11 miles inland from the i)resent observ- 

 atory. Each instrument has its own group of accumulators, conven- 

 iently charged by the help of a gas engine. 



Smithsonian Astro-physical Observatory: Langley. — An astro- 

 physical observatory has been established as a department of the 

 Smithsonian Institution at Washington, occupying at present a tern- 



