200 PERTURBATION OF THE ORBIT OF THE NOVEMBER METEORS. [10 



to 360 is a problem of Mechanical Quadrature ; the following are the 

 results. 



Ilange of u Change in N Range of u Change in N 



u n 



to 331" 11-23 to 202| 566'00 



33| ... 5 Of 82-62 202 ... 247^ 6'02 



50f ... 61| 306-34 247^ ... 281 38"36 



61| ... 78! 14978 28l ... 298f 16978 



78! ... 112! 14 ' 298 i 309 f 286-23 



112^ ... 157 1-55 309f ... 326^ 123'15 



... 202J 0-48 326^ ... 360 11-19 



to 202| 566-00 to 360 120073 



Thus the change in the longitude of the node produced by the 

 action of Jupiter during one complete revolution of the meteors is 20'. 



