THE ORBIT OF URANUS. 159 



Applying the correction — l".l for equinox, and dividing by 12, the equation of 

 condition becomes 



^Ul = + 2". 2 = 0.0885;i. 



In this way the following equations were obtained. It is deemed unnecessary 

 to give the details of the process, as it is one which every one can go over for liimself 

 from the data already given, and can reproduce all the residts, except so far as 

 they depend on the relative weights assigned to the different groups of observations 

 daring one and the same opposition. 



No. Date. 



