1C6 ASTRONOMY FOR 18H9, 1890. 



porary buiUliiif; iu tlio Smitlisoniaii grounds, erected in 1889-'0(). The 

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

 si>ectro-bolonieter, special galvanometer, and resistance box. Ke- 

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



SwARTHMORE COLLEGE : Miss >S'. J. Cunningham. — The observatory 

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

 Warner and Swasey transit and meantime clock ; a pier room at i)res- 

 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 (J-inch Warner and Swasey equatorial. Connected with the 

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

 fully ])rovided with the necessary meteorological and other apparatus. 

 (1890.) 



Tacubaya : Anguiano. — The construction of the new observatory 

 has progressed favorably, the photographic dei)artmeut 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 i>art 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 ecjuatorial ; a P)itch- 

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

 Gauthier for 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 photogra])hic map assigned to the 

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

 equatorial in observations of comets, asteroids, and nebula?. 



A series of daily observations of sun spots and facuhv 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 i)hotograi)hic 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 Atiuals. (1889.) 



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



