PRor.RKSS OF ASTKONOMV FOR 1891 AND 1892. 7.31 



tVoiuDi'. llastinj^'s's (•alculatioii, hy lUaslicar, was in ])Ia('(' and leady tor 

 iiso ill April, 18i)l. The spectrosco])!' is lar<xo, the objectives Itciiii;- 

 alike and of 3;^ inches clear ajx'rture and IL'A inclies locus, corrected for 

 work in the visual re.i;ion. The i^iatini;- is a 4-incli Hat, in addition to 

 which there is a. 30^ wiiite Hint prism. A second pliotoyrapliic ol)jec- 

 tive of exactly the same aperture and focal length as the visual iilass 

 will b<i ])rovide<l and a double tube will replace the sin<4le tube, tlu; 

 object glass being so sui)i)orted that either one may bt^ used on either 

 tube. 



The observatory was formally dedicated on elune 1."), ISUl; it has 

 been incorporated under the laws of the State of Illinois and its con- 

 trol is vested in a board of trustees. The plan of wori<. includes a study 

 of solar plienoinena, with especial attention to s[)ertroscopic investiga- 

 tions of the spots, chromosphere, and prominences. An interesting and 

 well-illustrated <h'Scrii)tion of the observatory, together with an address 

 delivered at the dedication by Prof, Young, is published in the Sidereal 

 Messenger for August, 1<S!>1, 



Kiel: Krueger. — '•Centralstelle fiir astronomische Telegramine." 

 Spectroscopic and photometric observations, observations of comets 

 and asteroids and computations of orbits and ei»liemerides. 



KoNiGSiJEKG: C. W. F. PciiTs. — Meridian obser\'atioiis. heliometer 

 measures of double stars, and for ])aralla\; observations of comets and 

 of the moon. . Meteorology. 



Kremsmunster : Wminer. — Observations of comets and sun spots. 

 Time service, meteorological and magnetic observations. 



Ladd: Upton. — The Ladd observatory was formally presented to 

 Brown University, Providence, II. 1., by Governor Ladd on October 21, 

 18!>1, The building and equipment have cost nearly |30,0()(). The 

 main i)art of the building is 43 by 27 I'eet, and the transit room 25 by 

 15 feet. The chief instrument is an equatorial of 12.2 inclies a])erture, 

 obj(^cti ve by Brashear, and mounting by Saegmuller. It is one of three 

 recently made by Mr. Brashear from the formuhe of Prof. C S, Hast- 

 ings. The mounting embodies several convenient devices. The spec- 

 troscope, which is of special excellence, is by Brashear. 



The clock room is a chamber in the eqiiatoiial i>ier, and contains a 

 Howard sidereal and a Molynciiux mean time clock. The other instru- 

 ments area 3-inch portable transit by Saegmuller; a smaller transit for 

 students' use, a Warner and Swasey chronograph, several chronom- 

 eters and sextants, a barograi)h, thermograi>h, and recording hygrom- 

 eter by Richard Freres, a recording rain ami snow gauge by Ferguson, 

 and ordinary meteorological instruments. The observatory is designed 

 juimarily for the instruction of students, but also for research, and the 

 equipment has been planned foi' a possible extension of the latter as 

 the resources of the observatory may allow. The director is J'rof 

 Winslow Ppton. 



Leipzig: JI. Bruns. — Parallax measmes of stars with large proper 



