454 Wisconsin Academy of Sciences, Arts, and Letters. 

 example of ^ 6. In this all values of a are put equal to 1; 



yz=20; r=K; so that 



s = a^^+a2^ + ....+a^^ =20 



y ^ 



= 0023177 c c~^^' ( i_— ) 

 m = 10-lc 



Furthermore if instead of c are put the values 0, 2, 4, . ,. ,. up 

 to the limit 20, the corres2:)oriding values of 



ox,»,|^//^, ^4cM-£! 



will be as follows:* 



* I get for the first number after in the fourth column 0.547723 and 

 BO on to the last 5.477226, but it hardly seems worth while to correct such 

 small errors. — E. F. C. 



