ASTRONOMICAL OBSERVATORIES. 389 



InstruinCMts for record in.i;- eartlKiiiuko ishoc-k.s liave l)een constructed 

 by a couipaiiy in San Francisco, and are sold at a very low li<;ure. Jt 

 is designed in tbis way that records of any seismic movements shall be 

 procured by private individnaJs in different i)arts of the State, and 

 .plates upon which the movehient has been recorded may be sent to the 

 observatory, where a record will be kept of all such data, and blue 

 ])rints will'be made of the diagrams and copies of this sent to the i)er- 

 son from whom the plate has Iteen obtained. Although this is quite 

 independent of the regular work of the observatory, it will doubtless 

 lead to the accumulation of data which will be most important in formu- 

 lating statistics for future use. 



The great telescope has been mounted for several weeks, and several 

 satisfactory tests of its capacity have been made. It was first directed 

 to the skj^on the evening of January 3, 1888, and a few observations 

 were then made for the partial adjustment of the object-glass, but the 

 observation was abbreviated by the skies becoming cloudy. The next 

 observatious made were on the evening of the 7th. On this occasion 

 Saturn was observed, and Mr. Keeler, who conducted the observa- 

 tion, says with rapture that it was ''the most glorious telescopic spec- 

 tacle ever beheld." He exclaims: "Not only was he shining with the 

 brilliancy due to the great size of the objective, but the minutest details 

 of his surface were visible with wonderful distinctness." 



Mount Lookout, Ohio. 

 Cincinnati Ohservatory. 



Longitude from Washington, 29'" 29.33« W. 



Latitude, 30^ 8' 20" N. 



Authority for longitude : Washington Observatious for 1877. Appen- 

 dix IV ; for latitude : Preliminary reduction of unpublished 

 Observatious. 



Directors : O. M. Mitchel, 1812. 

 H. TWITCHEL, 1853. 



W. Davis, 1851. 

 C. Abbe, 1869. 



Ormond Stone, 1875. 

 H. C. Wilson, 1882. 

 Founded in 1842 through the efforts of* Professor Mitchel. 

 The ground was donated by Nicholas Longworth. Removed in 

 1873 to new building erected at Mount Lookout. The new grounds were 

 donated by John Kilgour. 

 Instruments : 



(b) Meridian transit instrument : Makers, Buff and Berger; aper- 

 ture, 3 inches ; maguifjing power, 100 diameters. 



(c) Equatorialinstruments : 0>ne made by Utzschneider and Frau- 

 enhofer; finished by Merz & Mahler: object-glass refigured by 

 Alvan Clark & Sons ; aperture of objective, 11^ inches ; magnifying 

 powers of eye-pieces, 90 to 1400. {c') One by Alvan Clark & Sons ; 

 aperture, 4 inches; magnifying pov, ers, 15 to 250. 



(/) Chronor/raph : Bond 



