( 474 ) 



ti'icity, besides displacing the maxima and minima, also causes a 

 slight dissj^mmetry in regard to the minima. In order to separate the 

 influence of the excentricitj on the asymmetry from that of the 

 epoch, we may divide the equations of condition into two groups. 

 For the coefficients K, A, 1 and X are even functions ; Y and A 

 uneven functions of nt^ , resp. nt^ . If, therefore, we take the sum 

 and the difference of two equations of condition, corresponding to 



