are connected with the corresponding variationa of the mean motion. They may produce, in the secular expressions of the excentricities, and of the longitudes of the perihelia, sensible terms, depending on the squares and products of the disturbing forces. Determination of these quantities, [1280—1309] § 69
On the variations of the nodes and of the inclinations of the orbits. Equations which determine their periodical and secular values, [1310 — 1327] § 70
Easy method of obtaining the inequalities which arise in these elements from the ratio of the mean motions being nearly commensurable ; they depend on the similar inequalities of the mean motion, [1328—1342] § 71
Investigation of the variation which the longitude of the epoch suffers. It is upon this variation that the secular variation of the moon depends, [1343 — 1345] § 72
Reflections upon the advantages, which the preceding method, founded upon the variation of the parameters of the orbits, presents in several circumstances ; method of deducing the variations of the longitude, of the latitude^ and of the radius vector, [1345'^», &c.] § 73
