OF ARTS AND SCIENCES. 



117 



" The comparison of this ephemeris with observation is contained in 

 the following table. 



" Comparison of Orbit III, with Observation. 



C — O. 



" For this orbit the perturbations by Jupiter, since the opposition of 

 1848, have been computed. The influence of Saturn was found quite 

 unappreciable, and that of Mars very insignificant, although the latter 

 planet will be nearly in heliocentric conjunction with Metis during the 

 month of April next. Their difference of latitude is, however, very 

 considerable. 



" The variations of the osculating elements are as follows. They 

 are to be algebraically added to the elements in Orbit III 



