120 



/ 



By 20 observations, October, Novem- 

 ber, December, 1814, mean zenith 

 distance, Jap. 1, 1814. 53« 15' 5r,60-~^5p 



1,26 .;, , 



Combining these observations with the 77 observations be- 

 fore given, p = 1,1 or the double parallax = 2",2 as before. 



The above 40 observations (taking the annual motion in 

 N. P. D. = + 18,81) 



give the mean N. P. D. Jan. 1, 1813 = 69" £0' 19",66 

 The former determination gives 69 50 19 >S3 



-/ Draconis. 



By 26 observations in June, July and 

 August, 1813 and 1814, the mean 

 zenith distance, Jan. i, 1814, 1». 52'. 17",74 



By 32 observations, November, De- 

 cember, January and February, 

 1813, 1814 and 1815, the mean ze- 

 nith distance, Jan. 1, 1814, 1 52 17 ,86 



This indicates no sensible parallax, and the argument from 

 thence derived appears very conclusive. This star passes 

 the meridian within about half an hour of the passage of 



