PROGRKSS OF ASTKOXOMY FOR 1891 AND 1802. 733 



MoiTNT IIoLYOKE (Soutli ITadley, Mass.) — Sun-spot observations. 



Mount Kosa. — A small observatory is in course of construction on 

 3Iount liosa, 15,000 feet above sea level, consistinjj^ of a Mooden hut 10 

 by ;;o feet. 



Muxirii: tScclif/cr. — A new liepsold O-incli meridian circle was 

 mounted in July, 1891. Observations of comets and of Saturn with the 

 lO.Vinch refrsictor; investigations of ])ersonal equation dependent on 

 the magnitudes of stars; longitude work, meteorological observations. 



Natal. — Observations of the Moon's position and of Mars. 



O'GyALLA: Koiihohj. — Observations of sun s})ots, drawings of Jupi- 

 ter: a few spectroscopic observations and some pliotogra})hic exi)eri- 

 nients. Much time has been spent in the reorganization of the Gov- 

 ernment Areteorological Bureau. 



Oxford (T^'niversity). — The series of observations for determining 

 by photography the parallax of about 30 stars chietlj^ of the second 

 magnitude has been completed and the results i)ublished. Much time 

 has been spent in the preparation of the new instruments to be used 

 on the international chart of the heavens, and a considerable number 

 of plates comprised in the zone assigned to Oxford have been completed. 

 Ex})erimental work has also been done for the committee in charge of 

 the international chart. 



A convenient observatory has been erected contiguous to the main 

 building for the exclusive use of university students. This observatory 

 isfurnished with two small transit circles, three telescopes, one of which 

 is a retlector of 15 inches aperture, and subsidiary apparatus. 



Paris: TisseranfL — In the report for 1891 the director stated that 

 the ('iam})ey circle had been ai)plied to the investigation of the latitude 

 and the question of its variation; observations to deternune the con- 

 stant of aberration were completed, and besides the usual i)lanetary 

 and cometary observations, a considerable number of measurcMiicnts of 

 double stars and mi(;rometric measures of nebnhc were made. 



IMiotograjtlHc work upon tin' great (rhart and nj)ou the moon has 

 been continued, and the newly organized d(!i)artm('iit of spectroscopy 

 has obtained interesting results under IVl. Deslandics. 



The report tor 1892 contains a tribute to Admiral Mouchez, the late 

 director, an account of gratifying progress in the photograi)hic and 

 si)ectroscopic work, and with the ecpiatorial coude. A " lUireau des 

 Mesures des Cliches <lu (catalogue" has been organized, with Mile. 

 Klnmi>ke at its head. 



PoTSUAM: Vof/el. — The spectroscopic determination of the motion of 

 stars in the line of sight to which Dr. Vogel has given eisi)ecial atten- 

 tion has b(!en continued, and many of the results have been ])ublished. 

 Dr. Scheiner has worked upon stellar spectra and the spe(!tra of solar 

 promineiu'cs. Trof Miiller and Dr. Kempt" have (•omi)leted their obser- 

 vations for a i)hotometric Durchmusteiung, and IMol'. Miiller his long 

 series of photometric observations of the planets. Dr. Lohse and Prof. 



