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IIaverford College, Pennsylvania .
Haverford College Observatory.
Longitude from Washington, 6 m 59.33® E.
Authority for longitude and latitude: Observations on moon, culminat-ing stars, and with transit in the prime vertical in the years1854-’55. [The triangulations from TJ. S. Coast Survey stationsgive:
Director: ISAAC SnARPLESS.
Instruments :
(a) Meridian circle: One; diameter of circles, 26 inches; divided to15'; read by 4 microscopes to 2"; aperture of objective,.! inches.
(c) Equatorial instrument: Makers, Henry' Fitz, reworked by Clark;aperture of objective, inches; magnifying powers of eye-pieces, 60 toS00.
(J) Chronograph : Bond’s magnetic.
(g) Clocks: One sidereal; maker, Luicens: one sidereal; maker, Har-per; mercurial compensation.
(i) Zenith instrument : Aperture, inches; rejuvenated by Fautii &Co., and to be set up as soon as addition is built to observatory, to de-termine our latitude.
Hudson Observatory.
Longitude from Washington, 17 m 32.06 s W.
Latitude, 41° 14' 42.6" K
Authority for longitude and latitude: Prof. Elias Loomis , LL. D.Director: Charles J. Smith.
Instruments :
(a) Meridian circle: One; maker, Simms, of London ; diameter of cir-cles, 18 inches ; divided to 5'; read by 3 microscopes to 1"; aperture ofobjective, 3 inches.
Equatorial instrument : One; maker, Simms; aperture of objective, 4inches; magnifying powers of eye pieces, 50,100,150, 250, 350.
Clock: Sidereal ; maker, Molineux ; mercurial pendulum.
Private Observatory.
Longitude from Washington, 57 m 52.5 s W ,
Director : C. W, Irish.