56 



Trans. Acad, ScL of St, Louis, 



of series may be derived by applying the property named, 

 thus: 



If a, b, c, df . . . . represent any series of integers, 

 positive or negative, the set of series in which the n^^ 

 term of any series is equal to the sum of the first n terms 

 of the preceding series will be : 



Table 31. 



Table 31 may be arranged diagrammatically as in 

 Table 32. 



+ 



6 + 



d + 



Table 32. 



