G48 REPORTS OF ASTRONOMICAL OBSERVATORIES. 



Directors: O. M. Mitchel, 1842; 

 , H. TwiTCHEL, 1853 ; 

 ' W. DAVIS, 1854 ; 

 G. Abbe, 1859 ; 

 Ormond Stone, 1875. 

 Assistant: Herbert A. Howe. 

 Students : H. Y. Egbert, 



A. S. Flint. 

 Founded in 1842 by a society established for tlie purpose. The ground 

 was donated by Nicholas Longworth. A new observatory was 

 erected in 1870. It owns an equatorial by Merz and Mahler, with 

 an ajierture of 11.8 inches=0™.30. 

 Instruments : 

 {h) Meridian transit instrument: makers, Bitff and Berger; aper- 

 ture, 3 inches ,• magnifying ]30wer, 100 diameters. 



(c) Equatorial instruments : one made by Utzschneider andFRAUEN- 

 HOFER; finished by Merz & Mahler; object-glass re-figured by Al- 

 VAN 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 powers, 15 to 250. 

 (/) Chronograph: Bond. 



[<j) Clods: two mean time; makers, Egbert Molyneux, James 

 Ritchie & Son. 

 (/i) CJironomcter : sidereal; makers, William Bond & Son. 

 {i} Miscellaneous: Magnetic theodolite ; maker, Gambey. Sextant; 

 makers, Stackpole & Brother. Inclinometer, time-ball, telegraj^hic 

 ai)paratus, &c. 



Observations during the past year (from September 1, 

 1879, to September 1, 1880) : 

 {h) Determination of time and latitude. 



(c) Micrometrical measurements of double stars. Observations of sun- 

 spots. Determinations of positions of comets Hartwig and Pechiile. 

 (c') Approximate determinations of positions of stars south of 23"^ of 

 south declination. (Continuation Argelander's Durchmusterung.) 

 Work proposed for the coming year (1881) : 

 Continuation of Durchmusterung south of 23° of south declination. 

 Principal publications of the observatory during the 

 YEAR 1880: 

 Ormond Stone: Micrometrical measurements of 1,054 double stars, 

 vol. V, Publications of Cincinnati Observatory. 



Nashville, Davidson County, Tennessee. 



Private Observatory. 



Longitude from Washington, 38" 56^ W. 

 Latitude, 30© 10' 01" N. 



