26 CELESTIAL MECHANICS: LEVSCHNER 



2n"+4n' n, 2n"+9n' 3n. For getting these terms the develop- 

 ment of the perturbative function is used to the seventh degree and for 

 determining the terms of the eighth degree the method of Cauchy, as 

 extended by Puiseux, is used. No comparison with observations is 

 attempted. 



REFE.RENCES 



1 BODE'S B. J. 1810, p. 194, 6 Connaissance des Temps, 1818, 1819, 



'BODE'S B. J. 1810, pp. 198, 213; 1812, 1820. 

 p.253; Gauss Werke. vol. vi. 



3 BODE'S B. J. 1810, p. 199; Annales 

 de 1'Observatoire Astronomique de 

 Toulouse, vol.i, p. B4. 10 British N. A. 1860. 



4 B. J. 1814, p. 253; B. J. 1817, p. 255; "Bull. Astr. vol. 19, p. 434; Comptes 

 B. J. 1819, p. 224. Rendus, T. 135, p. 525. 



