Wallis, John,
A discourse of combinations, alternations and aliquot parts. Lond. Davis. 1685, 109-176 pp. F®°,
No. 1 in **£,191.1
Same. (In Maseres, F., ed. The doctrine of permu- tations, combinations [etc.). Pp. 269-351. Lond. 1795.) 3923.5 > **£.5114.14
 
-Combinations.-Permutations,.