166 ASTRONOMY FOR 1889, 1890. 



porary building in the Smithsonian grounds, erected in 1889-90. The 

 principal instruments are a very large siderostat by Grubb, a large 

 spectro-bolometer, special galvanometer, and resistance box. Ke- 

 searches in telluric and astro-physics will be carried on. 



SWARTHMORE COLLEGE : Miss S. J. Gunning]ia7)i. — The observatory 

 building contains four rooms : A transit room, in which is a 3-inch 

 Warner and Swasey transit and mean-time clock ; a pier room at pres- 

 ent utilized as a sidereal clock room ; a work room containing the chro- 

 nograph, chronometer, and a small reference library ; and the dome, in 

 which is a G-inch Warner and Swasey equatorial. Connected with the 

 observatory is the signal service station of the state weather service, 

 fully provided with the necessary meteorological and other apparatus. 

 (1890.) 



Tacubaya : Angiiiano. — The construction of the new observatory 

 has progressed favorably, the photographic department being entirely 

 finished and the instruments mounted. The photographic equatorial is 

 by Grubb, of the pattern adopted by the astrophotographic congress in 

 1889 and furnished for most of the observatories taking part in the 

 international chart. Among the minor apparatus added to the equip- 

 ment of the observatory may be mentioned a complete portable photo- 

 graphic outfit ; a Merz polariscope for the 15 inch equatorial ; a Pritch- 

 ard's wedge photometer by Hilger; a mercury artificial horizon by 

 Gauthierfor the meridian circle; a complete meteorological outfit; a 

 petroleum motor and. electric light installation. 



In August, 1889, two additions were made to the observatory staff, 

 Messrs. Camilo A. Gonzalez and Guillermo Puga, who have been as- 

 signed to duty on the meridian circle. They have been engaged in 

 studying the instrumental constants and have undertaken the observa- 

 tion of certain stars to the tenth magnitude, conveniently situated for 

 reference stars for the zone of the photographic map assigned to the 

 Tacubaya observatory. Sr. Felipe Valle has been engaged with the 

 equatorial in observations of comets, asteroids, and nebulae. 



A series of daily observations of sun spots and faculte has been made. 

 Photographs of the sun have been taken with the photoheliograph. 

 Two parties were sent out to observe the total solar eclipse of October 

 22, 1889, one to Yucatan and one to San Luis Potosi. (1890.) 



Tananarivo : Colin.— An observatory has been established on a 

 hill about 4,400 feet high a short distance to the east of Tananarivo on 

 the island of Madagascar. It has an equatorial, meridian instrument, 

 and photographic telescope for solar work. (1889.) 



Tokyo : Terao. — A large number of observations of comet e, 1888, 

 made by Professor Teara and Mr. J. Midzuhara have been published as 

 the second fasciculus of volume 1 of the Annals. (1889.) 



Toulouse : Baillaud.— The photographic telescope has been mounted. 



