392 ASTRONOMICAL OBSERVATORIES. 



(d) Spectroscope : By A. Clakk & Sons, of 7 prisms twice tiaverseil. 



{/) Chronographs : Oue by A.. Clark & Sons, with couical peudulum 

 gov^ernor ; another by William Bond & Sons, Boston, with Bond's 

 spring- governor. 



{g) Clocks : One mean time, made by E. Howard & Co., Boston; 

 one by William Hillhouse, New Haven ;. one sidereal, by William 

 Bond & Son, Boston ; one by Appleton, London ; one by E. How- 

 ard & Co. 



{h) Chronometers : One pocliet chronometer, mean time, by Johnson, 

 London; one sidereal, by Tool, London, improved by NEors, New 

 York. 



(i) MisceUaneous : Two bifilar position-micrometers, one bj' Dollond, 

 the other by Fautii & Co., Washington, D. C. ; a patent sextant and 

 a patent reflecting circle, by Pistor & Martins, Berlin; repeating 

 relays, sonnders, etc., for time service. Yale College Las also in nse a 

 5 inch 10-foot refractor by Dollond, a sidereal clock, and a 20-inch 

 transit instrument, in charge of Professor Loomis. 



New Orleans, Louisiana. 



Obserraiori). 



Longitude from Washington, 



Latitude, 29° 57' 2(5" N. 



Authority for longitude and latitude: U. S. Coast Survey, 1859, p. 



2G5 ; Connaissance des Temps, Paris, 1884, p. Ix. 

 Director: . 



New Windsor, Illinois. 



Private Observatory. 



Longitude from Washington, 53"> 53« W. 

 Latitude, 41° 13' N., approximately. 



Authority for longitude: telegTai)hic time signals direct from U. S. 

 Naval Observatory at Washington on December 4, 5, 0, 7, 

 1882; for latitude, own determination.* 

 Direeior : Edgard L. Larkin. 



Permanent observatory; brick pier and revolving dome. 



Instruments: 

 (c) Equatorial instrument: Makers, Alvan Clark & Sons: aperture 

 of objective, C inches; magnifying powers of eye-pieces, 27, CO, 130, 250, 

 300, GOO, with prism and solar eye-piece. Two of the eye-pieces are 

 GuNDLAOii's periscopic. 



(g) Cloch: Sidereal; ordinary clock. 



(i) Miscellaneons : Planisphere, charts, maps, and catalogues. 



