G48 REPORTS OF ASTRONOMICAL OBSERVATORIES. 



Directors: O. M. Mitchel, 1842; 

 H. TwiTCHEL, 1853 ; 

 W. Davis, 1854 ; 

 C. Abbe, 1859 ; 

 ORMor^D Stone, 1875. 

 Assistant: Herbert A. Howe. 

 Students : H. Y. Egbert, 



A. S. Flint. 

 Founded in 1842 by a society established for the 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 aperture of 11.8 inches=0™.30. 



Instruments : 



(h) Meridian transit instrument: makers. Buff and Berger; aper- 

 ture, 3 inches; magnifying power, 100 diameters. 



(e) Equatorial instruments : one made by IJtzschnbider and Frauen- 

 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. 



(g) Clocls: two mean time; makers, Egbert Molyneux, James 

 Eitchie & Son. 



(//) Chronometer: sidereal; makers, William Bond «& Son. 



(i) Miscellaneous : Magnetic theodolite ; maker, Gambev. Sextant ; 

 makers, Stackpole & Brother. Inclinometer, time-ball, telegraphic 

 apparatus, &c. 



Observations during the past year (from September 1, 

 1879, to September 1, 1880) : 

 (h) Determination of time and latitude. 



{(■) Micrometrical measurements of double stars. Observations of sun- 

 spots. Determinations of positions of comets Hartwig and Pechiile. 

 (c') Api)roximate determinations of positions of stars south of 23° of 

 south declination. (Continuation Argelander's Durchmusterung.) 



W^ORK 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. 



]!^ASHViLLE, Davidson County, Tennessee. 



Private Observatory. 



Longitude from Washington, 38"^ 5G^ W. 

 Latitude, 36° 10' 01" :N". 



