290 



INFERIOR CONJUNCTION OF VENUS, 1852, 



JULY 18. 1853. 



Clouds prevented observations until the 26th of July, except when the planet was too near the sun. 



JULY 37, 1852. 



comparing star was not visible in the morning twilight. 



JULY 28 and 29, 1853. 



Cloudy. 



Remarks. 



A dripping morning ; even the object-glass, although under cover, suffused with moisture before it had been exposed ten minutes. Thus the 

 images were never sharp ; and, indeed, the star was nt least 3&quot; in diameter all the time, though the planet was tolerably favorable for measures. 



a This observation omitted in the results. 



Results. 



Mean S. F. 

 Mean N. F. 



Two transits 

 Three transits 



h. m. 



Correction for chronometer at 2 53 . 

 Correction for chronometer at 2 58 . 



A N. S. limbs micr. in rev. . . . 

 Variation of declination in 4m. 31s. . 

 Corr. for diam. of micr. wires . 

 Observed N. S. diameter .... 



h. m. s. 

 2 53 35.48 

 2 58 6.31 



+ 23.41 

 + 23.42 



3.220 = 62.76 



0.25 



2.20 

 60.31 



+ 52.25 

 + 52.83 



Rev. 



9.325 



12.545 



= 3 1.74 

 4 4.50 



h. m. s. 



Santiago sid. time S. F 25358.90 



Santiago sid. time N, F 25829.73 



Interval 4 30.83 



h. m. 



A pat 2 53 , 0.88 



A p at 2 58 ... 1 .03 



