114 MR. JAMES COCKLE : SUPPLEMENTARY, ETC. 



to vanish it may be regarded as a modification and simpli- 

 fication of the theory of Lagrange and Vandermonde; 

 but it is needless to assume this evanescence, and indeed 

 by connecting it with Euler's process far more striking 

 formulae are obtained. Considered as a process of elimi- 

 nation I shall give it a discussion elsewhere.* 



* See a paper " On Equations of the Fifth Degreej" which will appear 

 in the forthcoming Diary. 



