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West Point Observatory.
Longitude from Washington, 12 ra 22.71 s E.
Director: Col. P. S. Michie, Ph. Dr.
No regular work is done at this observatory beyond the practicalinstruction of the cadets in the use of the various instruments and thesolution of the usual problems connected with the determination oflatitude, longitude, time, etc., and work for local time, and local co-ordinates.
In 1882 a fine and permanent observatory was erected, designed tocombine the latest and most improved observatory plans and to beequipped well, and intended to be a regular working observatory.
Field Observatory—Engineer School of Application.
Longitude from Washington , 13 m 04.39 s ± 0.14 s .
Latitude , 40° 47' 21.59" N. ± 0.08".
Authority for longitude and latitude: Longitude determined by tele-graphic time-signals from United States Naval Observatory ,Washington ; latitude determined by observations with zenithtelescope.
Director : General Henry L. Abbot .
Instruments :
(6) Meridian transit instruments (four): One; makers, Lingke &Co., Silesia; aperture, 24 inches; magnifying power, — diameters; focallength, 30 inches. One, Eussian transit, aperture, 2.6 inches; Stack-pole & Bro., New York ; focal length, 30 inches. One, Troughton,aperture, 2 inches; Troughton, London ; focal length, 30 inches.One, Stackpole; aperture, 2 inches; Stackpole & Bro., New York ;focal length, 24 inches. *
(e) Equatorial instrument: Makers, Fauth & Co., Washington ;aperture of objective, -5J inches; magnifying powers of eye pieces, as-sorted.
(/) Chronographs: Hipp’s; Negus-Morse register.
(h) Chronometerk : One mean time; makers, Arnold & Dent. Onesidereal; makers, Lukens, Bond & Son. Both break-circuit.
(i) Miscellaneous: One portable telescope, equatorially mounted; onezenith telescope— William Wurdemann ; two sextants, Stackpole& Bro.; one personal equation machine; one barometer, GreenAscistern,