374
(h) Chronometers: Two sidereal 5 makers, Feodsiiam, 3451; Bond,236; one tkermometric chronometer, Feodshaji, 3424.
(i) Miscellaneous: Comet-seeker and other small telescopes and ap-paratus.
Cambkidgeport, Massachusetts .
Private Observatory.
Longitude from Washington, 23 m 49* E. (approximately).
Latitude , 42° 21' 56" F. (approximately).
Director: E. F. Saivyee.
Dearborn Observatory.
Longitude from Washington, 42 m 14.69 s W.
Latitude, 41° 59' 1 " IN.
Directors: T. H. Safeord, 1865.
Elias Colbert, 1874.
Annexed to the university. Founded by subscription in 1822.Instruments:
(a) Meridian circle: Makers, Bepsold & Son ; diameter of circle, 40inches; divided to 2'; read by 4 microscopes to 0.1"; aperture of object-ive, 6 inches; for observations of the sun, aperture employed, 3 inches.
(c) Equatorial instrument: Makers, Alvan Clark & Sons ; apertureof objective, 18J inches; magnifying powers of eye-pieces, positive, 120 ,190, 287, 385, 900; negative, 135, 225, 450, 900.
(/) Chronograph: G. W. Hough ; cylinder recording.
(g) Cloclcs: One mean time; makers, Howard & Co. ; Graham es-capement, mercury pendulum; one sidereal; makers, Charles Gort-ner & Co., London ; Graham escapement, mercury pendulum.
(h) Chronometer: Sidereal ; makers, Bond & Son.
(i) Miscellaneous: Signal mean time clock for transmitting time sig-nals.
Cincinnati Observatory . (See Mount Lookout.)
Clinton, Few York.
Litchfield Observatory of Hamilton College .
Longitude from Washington, 6 m 34.65* E.
Latitude, 43° 3' 17" F.
Authority for longitude and latitude: Longitude telegraphically de-termined from Cambridge , Mass . Latitude by stars in primevertical.
Director: C. W. F. Peters.
Founded in 1852 by subscription; completed in 1855; central edifice