Present State oJKn&mledge of the Parallax of the Stars. 601 

 Results from the Measures of Distances of 61 Cygnifrom Star (a). 



Results from the Measures of Star (b). 



June 12. — The following papers were read : — 



Continuation of the Investigation for the correction of the Ele- 

 ments of the Orbit of Venus. By Mr. Glashier, of the Royal Ob- 

 servatory, Greenwich. 



This paper is a continuation of Mr. Main's investigations, com- 

 municated to the Society in June 1837 and April 1838, and printed 

 in vols. X. and xi. of the Memoirs. Mr. Main corrected the orbit 

 from Mr. Airy's observations of 1833-36. Mr. Glashier recom- 

 puted the observations of 183G (for errors of assumed semi-diame- 

 ter), and computed the observations of 1837 and 1838, and gives 

 corrections of the elements of the orbit for all the years : then, 

 subirtituting tlie observations, he deduces the residual errors (as 

 compared with Lindcnau's tables), whicli he finds not so small as 



