REPORTS OF AMERICAN OBSERVATORIES. 555 



Location of observatory : Mount Lookout; (County) Hamilton; (State) 

 Ohio. 

 Name of observatory : Cincinnati Observatory. 



Longitude from Washington, 29 m 29.42 8 W. 

 Latitude, 39° 8' 35".5. 

 Authority for latitude and longitude : American Ephemeris for 1880. 



I. Personnel: 

 Director, Ormond Stone. 

 Assistant, Herbert A. Howe. 

 Student, H. V. Egbert. 



II. Instruments: 



(b) Meridian transit instruments : Makers 4 Buff and Berger ; aper- 

 ture, 3 inches; magnifying power, 100 diameters. 



(c') Equatorial instruments; Makers, Utzschneider and Frauen- 

 hofer ; finished by Merz & Mahler ; object-glass refigured by Al- 

 VAN Clark & Sons; aperture of objective, 11| inches; magnifying 

 powers of eyepieces, 90 to 1,400. 



(c 1 ) Alvan Clark & Sons ; aperture, 4 inches ; magnifying powers, 

 15 to 250. 



(/) Chronographs: Bond. 



(;j) Clods: 2 mean time; makers, Robert Molyneux, Jas. Ritchie 

 & Son. 



(h) Chronometers, Sidereal, 1 ; makers, Wm. Bond & Son. 



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

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

 apparatus, etc. 



III. Observations during the past year: 

 From September 1, 1878, to September 1, 1879. 



(b) Determination of time and latitude. 



(e) 2033 sets of double-star measurements. 



(c and c') Examination of surface of Sun on ISO days. Spots seen on 

 40. (c 1 ) was used with one inch aperture until the middle of February, 

 1879. Since that {<■) most of the time with an aperture of 5 inches. 



IV. Work Proposed for the coming year (1879-80): 

 Continuation of observations of double stars and observations of sun 



spots with (r) ; Durchffiusterung south of 23° south declination with(c); 

 determination of time with [b). 



VI. Additional information: 

 Telegraphic time signals are sent to the city and a ball dropped from 

 a staff at the observatory each day at noon. 



Location of observatory : (City) Nashville; (County) Davidson; (State) 

 Tennessee. 



