EEPORTS OF ASTRONOMICAL OBSERVATORIES. G43 



Hudson, St(mmlt Count)!, Ohio. 

 Iludson Ohscrratory. 



Long'itiule from Washington, 17™ 32^0() AV. 



Latitude, 41° 14' 4.2". (i N. 



Autliority for latitude and longitude : Professor Elias Loo:mis. LI.. I >. 



Director^ Charles J. Smith. 

 Instruments : 



(a) Meridian circle: one; maker, Sim^nis, of London; diainctcr of 

 circles, 18 inclies; divided to 5'; read by 3 microscopes to 1"; aix-rtuic 

 of objective, 3 inches. 



Equatorial instrument : one; maker, Simms ; aperture of objective, 1 

 inches ; magnifying- powers of eye-pieces, 50, 100, 1.50, 2.50, 3.50. 



Cloclc: sidereal; maker, Molineux; mercurial pendulum. 

 Observations during the past year : 



No systemati<; course of observations pursued. Instruments used 

 only for purposes of instruction. 



Iowa City, Johnson County, Iowa. 



Private Observatory. 



Longitude ft'om Washington, 57™ 52'^ W. 

 Latitude, 41° 39'.8 N. 



Authority for latitude and longitude: Observations made at the 

 . observatory during the past eleven years. 

 Director : 0. W. Irish. 

 Assistants : Mrs. C. W. Irish ; 



Miss Lizzie Irish ; 



Miss Ruth Irish; 



Dr. C. M. Hobby. 



Instruments : 



(&) Meridian transit instrument: a small one made by the director 

 himself; aperture, one inch; magnifying power, 11 diameters. 



(c) Equatorial instriment : maker. Chevalier, Paris; aperture of 

 objective, 4 inches; magnifying powers of eye-pieces, 25 to 300. 



( f) Chronograph : a Morse register. 



(g) Cloch: one mean time; beating three-quarter seconds: of German 



make. 



Work proposed: 

 Observation of the coming transit of Mercury, if business occupa- 

 tions permit. 



