DE vice's COMET OF 1844. 139 



that this comet can not be identical with the famous 

 comet of 1770, nor with that of 1585, nor with any other 

 on record, unless that of 1678. He has shown that there 

 is strong reason to believe that the comet of De Yico is 

 identical with one observed in 1678 by La Hire, and re- 

 corded in the Histoire Celeste of Lemonnier. Dr. Brun- 

 now has undertaken similar computations, and has arrived 

 at the same results as Le Yerrier. 



