BULLETIN OF THE BUSSEY INSTITUTION. 177 
invoiced did not necessarily indicate that at which an article of 
similar quality could be bought in London. Doubts were, in fact, 
suggested in certain quarters as to the justice of Mr. Saltonstall’s 
premise in the foregoing computations that £4 was the London 
price. In order to settle this point definitively, application was made 
to Mr. F. H. Appleton of West Peabody, since elected an officer of 
this institution, who happened to be in England in. September, 1873, 
that he should put himself into communication with several English 
manufacturers of superphosphates, and ascertain the prices at which 
the products of their establishments are habitually sold. The data 
obtained by Mr. Appleton are given in the table on the following page. 
It will be seen that they fully corroborate Mr. Saltonstall’s statement. 
VOL. i. 23 / 
