202 



REPORT 1888. 



exhibited in the annexed table, the latter columns of which present a 

 similar comparison for the year 1873. The two results may thus be 

 summed up : 



The relation between these results is predictable by, and consilient 

 with, the conclusions of a priori reasoning. Accordingly the inference 

 that the deviation between the two computations is not likely to exceed a 

 small percentage may safely be extended to adjacent cases. 



It follows, from the principles laid down in the earlier part of this Memorandum^ 

 that the discrepancy to be expected between the two results depends on three cir- 

 cumstances : the number of items, the inequality of the price-Tariations, and th& 



