PROGRESS OF ASTRONOMY FOR 18;)l AND 1892. 735 



tiviiiity <>»' tlic town. The Jmildiiiiis were coiiiiiiciiccd the lollowing 

 year, but it was jiot until the cud of IStC tliat tlicy icccivcd their in- 

 strujueutal equipnuMit. (iari[)uy'so])servat()ry was tlien abandoued. 



Underwood (Appk'ton, Wis.): /-. W. r//f7r//roof/.— The Underwood 

 observatory in eouueetioii with J>aAvreuee Uuiversity at Apph'tou, Wis., 

 was equipited at the opeuiu*^ of tlie collejie year of 1892- *.>;>, Tlu^ out- 

 jSt consists of a 10-iueli Chirk equatorial, 4-iueh meridian circle, nieau- 

 time and sidereal clocks, chronouieter. ami chrouonra])h. ^V local tiuu' 

 service has been established. 



Tnited States Naval Observatorv: ^fc^<(i^■.— At t lie time of the 

 last report of the Sui)eriutendeut, September 29. 1S92, the new buildinji's 

 were not ready for occupancy. The usual routine obser\ ations have 

 been somewhat interrupted by prei)arations made for the removal of 

 the instruments to the lu^w site, advantage beinit;- taken of the iuter- 

 ruption of observations to ad\ ance tlie reductions of previous years. 



Prof. Asaph Hall was retired by law from active service as ai staff 

 ofhcer of the Navy on October 15, 1891. 



Upper Tulse Hill: Rmjijins. — Visual and photoi;raphic observa- 

 tions of Nova Auriga' (1892). 



Upsala: Duner. — Variable stars; stellar photography. A new pho 

 tograpliic refractor of 33 centimeters ( 13 inches) objective has been under 

 construction, and has necessitated some alterations in the building. 

 Time service. ♦ 



Vassar: Miss ]Vlii()u\i/. — Sun-spot observations, observations of 

 comets, etc. 



\Vest:meath: Wilson. — The 2-foot (irubb reHector has been re- 

 mounted and used for stellar photography. Some photographs of 

 Ju])iter have been taken with a photographic photometer, todetcninine 

 the relative allx'do of the jilanet and his moons. 



Windsor: Tcbhutf. — Observations of comets, double stars, occidta 

 tions, and the phenoimma of Ju[)iter's satellites. 



Wolsingham: Kspin. — Spectrosco])ic zone work; double stars, A 

 nund)er of new variable stars have been discover<'d, Meteoroh)gical 

 observations. 



Vale. — Dr. Elkin's lielionu'tcr work constitutes the chief astro- 

 nomical activity. In 1891 the seri(;s of observations to deteinune the 

 parallaxes of the first magnitude stars of the iu)rthei'n iienusi»here was 

 comi)lete<l. Observations have also been made of comi>arison stars for 

 Victoria, and the comi»utations on the Iris series in 1888 have been car- 

 ried forward chietly by Miss Palmer. Observations of comets and 

 asteroids were made by Mr. Chase with th(; S-inch Heed e(|uatorial. 



From 'Inly, 18!)1, to .Ianuar.\, 1892. the helionieter was devoted to a. 

 series of measui-es on the satellit(?s of ,Iui)itei' for the determiTuition 

 of their orliits, and the mass of tlie i)lanet. A tier the coini)letion of 

 this work Dr. Chase comjdeted a triangulation of the principal stars 

 in Coma Berenices. A series of measnres of Algol has been made to test 



