REPORTS OF AMERICAN OBSERVATORIES. 547 



Longitude from Washington, 2° 50' 33" oast. 

 Latitude, 40° 40' 19" north. 

 Authority for latitude and longitude : United States Coast Survey. 



I. Personnel: 

 Director, Charles W. Plyer. 



II. Instruments : 



(/>) Meridian transit instruments : Makers, .ToriN Bliss & Sons, New 

 York; aperture, 1 inch; magnifying power, 10 diameters. 



(c) Equatorial instruments : Maker, Henry G. Fitz; aperture of objec- 

 tive, GJ inches. 



(c') Nine eye-pieces, from 50 to 630. 



III. Observations during the past yeah: 



(e) (c') None, owing to ill-health, except an occasional search for 

 comets. 



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

 Drawings of the surface of Mars, which will be a continuation of my 



work in 1877. 



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

 New York. 



Private observatory. 



Longitude from Washington, h 12 m 40 s .47 east. 

 Latitude, 40° 52' 31".3. 

 Latitude and longitude deduced from Coast Survey map of 18G3 and 

 American Ephemeris 1879, assuming the latitude and longitude of New 

 York, given in the Ephemeris, to be the latitude and longitude of the 

 City Hall. 



I. Personnel: 



Director, William Meikleham. 

 No assistants. 



II. Instruments: 



(c) Equatorial instruments : Maker, John Byrne, of New York; ap- 

 erture of objective, If';, inches; focal distance, 05 inches; magnifying 

 powers of eye-pieces, 20, 30, 45, GO, 80, 150, 250, 300, 350, and 450; also 

 an amplifier which doubles each of these powers when used. Attached to 

 the telescope is a finder of 1£ inches aperture, magnifying 20 diameters. 

 Bight ascension circle divided to read to 4 seconds of time; declination 

 circle divided to read to 1' of arc. Both circles divided on silver and 

 read by microscopes attached thereto. Driving-clock. 



(d) tipeciroscopes : One. 



(()) Clocks: Mean time; Maker, Setii THOMAS, Sons & Co. 



(■/) Miscellaneous ; Pilar micrometer; divided on silver to measure &" 

 of arc in distance, and G' in positiou, with suitable eyepieces and illu- 

 minating apparatus. 



