REPORTS OF ASTRO:,'OMICAT. OBSERVATORIES. 041 



{(1) SpcctroscoiJes : large O-prisni Clark spectroscope; seven prism, 

 double acting (equivalent to 13 prisms), litting equatorial nuMitioiicii 

 above. 



(/) Clironofjrapli : Bond's spring governor. 



(//) Clocls: one mean time; makers, U'J zscn^EiDER & Frauen- 

 HOFER, connected with chronograph : one sidereal ; makers, Utz- 

 SCHNEIDER & MAULER, of ]Munich, connected with chronograph. 



(i) Miscellaneous : Comet seeker, aperture 3.0 inches, mounted on 

 large tripod ; small portable telescope, aperture 3 inches ; zenith sector, 

 loaned by Coast Survey, aperture 4 inches ; full set of c(nnmon meteoro- 

 logical apparatus, including a recording barometer ; sextant by IIakdv, 

 of London. 



Observations during the past year : 



[a) For time and latitude. 



{d) Class illustration on reversal of lines, and for prominences. 



(i) Meteorological observations 3 times per day ; sun-spot observa- 

 tions since September 1, 1879. 



Work proposed for the coming year (1881) : 



Similar work, with special attention to sun spots, prominence, &c., 

 and spectroscopic observations. 



Hastings, Westchester County, Xew Yorl: 



Private Observatory. 



Longitude from Washington, 12-" 42^7 E. 



Latitude, 40° 59' 25" N. 



Authority for latitude and longitude : Coast Survey. 



Director : Henry Draper. 



Assistant: A. Hofbauer. 



Instruments : 



(6) Meridian transit instrument : makers, Stackpole & Brother ; 

 aperture, 2 inches; magnifying power, 45 diameters. 



(c) Equatorial instruments : one reflector, 28 inches aperture, made 

 by Henry Draper; ((•') one refractor, 11 inches aperture, by Alvan 

 Clark & Sons, with photographic corrector. 



{d) Spectroscopes: 1 diffraction, 1 stellar photographic, 1 automatic, 



(/) Chronograph : one made by Henry Draper. 

 {(j) Glocl- : one mean time ; maker, Howard. 



{h) Chronometers: one mean time; maker, :N^egus: one sidereal; 

 maker, Kegus. 



{i) Miscellaneous: Altitude and azimuth reflector of 15^ inches aijer- 



ture. 



S. Mis. 31 41 



