ASTRONOMY. . 173 



& Swasey, 4-iiich aperture aud 40iiicb focus, with 16-incb circles: one 

 circle is coarsely divided, the other is divided to 5' and is read by two 

 microscopies to 1". The sidereal clock was made by the Self-winding 

 Clock Company, of Brooklyn, New York; it has Gerry's patent gravity 

 escapement, and is automatically wound by a small electric motor. The 

 chronograph was designed and constructed by the director. Outside 

 the observatory pro])er, but ready for occasional use, are the 1) i itch, 

 5-inch, and 3-inch reflectors, also built by Mr. Brooks, and used by him 

 at Phelps, New York, in searching for comets. 



Georf/etoiim {District of Columhia). — The observatory of Georgetown 

 College (built in 1845) was placed under the charge of Father J. G. Ilagen, 

 S. J., in the winter of 1888. The buildings and instruments, which 

 have been but little used for nearly forty years, have been thoroughly 

 renovated at considerable exi»ense. Father Hagen has not as yet laid 

 out any plan for the future work of the institution. 



Glasgoiv {Scotland). — Observations with the transit circle of a list of 

 stars in the earlier volume of Weisse's Bessel. 



Glasgow { United States). — See Morrison Observatory. 



Gohlis. — The private observatory of Herr Winkler was transferred 

 in 1887 from Gohlis, near Leipzig, to the neighborhood of Jena — latitude, 

 +5(P 55' 35".6; longitude, 0'' 4G'" 2(K8 east of 'Greenwich. 



Go/Art.— Considerable progress has been made in the reduction of the 

 zone observations (25° — 20^). With the meridian circle observations 

 of moon culminations and of stars of Mayer's catalogue have been 

 made, and with the equatorial, observations of comets, of asteroids, 

 and of Gore's variable near x^ Orionis. 



Dr. Becker has, at the request of Professor Newcomb, collected in a 

 convenient form Hansen's formuljB for the general perturbations by 

 Jupiter and has applied them to the planet Eurynome. It will be re- 

 membered that Prof. J. C. Watson made provision in his will for the 

 computation of tables of the asteroids discovered by him, whic^li will 

 readily give the places of the planets at future oppositions. Dr. Becker's 

 work is for the purpose of facilitating these comi)utations. 



Dr. l*aul Ilarzer succeeded Dr. Becker as director on December 1 , 1 8S7. 



Gottingcn (188C). — Dr. Schur assumed charge of the observatory on 

 April 1, 1886, and immediately set to work to have much needed and 

 very extensive repairs made in the buildings and instruments. As most 

 of the instruments have been dismounted, the principal work done has 

 been upon a new reduction of the zone observations made by Kliidvcr- 

 fues from 1858 to 18G3. A Oinch Rei)Sold heliometer has been ordered. 

 The personnel of the observatory consists (with the director) of observ- 

 ator, Dr. Battermann; assistant, Herr Clemens, and computer, Heidorn. 



Greenwich. — The regular meridian observations of the sun, moon, and 

 major and minor planets have been kept u]) as before, and satisfactory 

 progress has been made with the reductions for a new ten-year cata- 

 logue (1877-'8G). Observations of the moon have been made with the 



