OF ARTS AND SCIENCES. 



119 



" The elements computed by me on the 28th of May last, and pub- 

 lished in No. 639 of the Astronomischen Nachrichten (XXVII. p. 237), 

 gave the right ascension, at the beginning of August, a minute and a 

 half of arc too large, and the declination nine seconds too far south. 

 These elements were deduced from meridian observations at an inter- 

 val of but thirty days, and furnish a strong testimony to the importance 

 of basing the orbits computed from a small arc upon meridian observa- 

 tions alone, if possible." 



