REPORTS OF AMERICAN OBSERVATORIES. 559 



Location of observatory: (City) New York; (County) New York; 

 (State) New York. 

 Name of observatory: Mr. Eutherfurd's private observatory. 

 Longitude from Washington, east 3° 3' 52".05. 

 Latitude north, 40° 43' 48".53 ± 31. 

 Authority for latitude and longitude: United States coast surveying 

 party (1859), with zenith telescope upon 24 pairs of stars, and tele- 

 graphic communication with Washington aud Cambridge. 



I. Personnel: 

 Director, L. M. Eutherfurd. 

 Assistant, D. C. Chapman. 



II. Instruments : 



(b) Meridian transit instruments: Maker, Stackpole; aperture, 3 

 inches. 



Only used for time. 



(c) Equatorial instruments: Makers, Messrs. Eutherfurd & Fitz, 

 aperture of objective, 13 inches. 



(c') The telescope has been employed mostly in photographing the 

 sun, moon, and groups of stars. 

 (/■') Chronographs: Morse. 

 {(j) Clocks : Sidereal ; Maker, Dent. 



Location of observatory: (City) Northfleld; (County) Eice; (State) 

 Minnesota. 



JS 'a me of observatory : Observatory of Carleton College. 

 Longitude from Washington, 93° 9' 14" approximately. 

 Latitude 44° 27' 41" approximately. 



Longitude: Occupation of Jupiter's satellites. We hope soon to be 

 determ i ned tel egraphical ly. 



Authority for latitude and longitude: Observations with telescope 

 taking a great number of measures of pahs of stars with micrometer ac- 

 cording to Coast Survey practice. 



I. Personnel: 



Acting Director, William W. Payne. 

 Assistants: 1. A. C. WILSON. 

 2. W. T. Bill. 



II. Instruments: 



(/>) Meridian transit instruments: Makers, Fauth & Co., Washing- 

 ton; aperture, 3 inches; magnifying power, GO, 70, and SO diameters. 



(c) Equatorial instruments : Makers, A. Clark & Sons, Cambridge- 

 port, Mass.; aperture of objective, Sj inches; magnifying powers of eye- 

 pieces, 50, 100, 200, 400, 800, besides a series of micrometer powers. 



(c 1 ) Portable equatorial: Makers, John Byrne, New York ; object- 

 ive, 4.3 inches clear aperture. 



