VALUATION OF MANURES. 



3T9 



zed, and in each case the analysis was duplicated in order to verify 

 the results. 



To avoid complications we will examine only the nine so called 

 superphosphates ; and from these I propose to throw out three. 

 First, the "home made," furnished by Mr. Plumb, partly because 

 of its inferiority, being worth by our scale of prices less than $18 

 per ton ; that is to say, less than a cent per pound, and partly 

 because no price was aflSxed to it. Secondly, we throw out 

 Baugh's, for the reason that it contained no soluble phosphoric acid 

 at all, and therefore is not entitled to the name, because soluble 

 phosphoric acid is the distinguishing feature of any and all super- 

 phosphates, properly so called. Lastly, we throw out "Eusself 

 Coe's ammoniated superphosphate," for a very different reason, 

 namely, that it is too good for the money. The price named is 

 cheaper than that of any other, while its value as shown by the 

 analysis, and the scale here adopted, is fifty per cent, higher than 

 any other ; eighty per cent, better than Atwood's, and more than 

 a hundred per cent, better than Bradley's. It is safe to say, that 

 it could not be made and sold, in the usual course of business, at 

 the price given, without loss. Hence we infer, either that the 

 sample was an exceptional one, not fairly representing the bulk 

 sold ; or else that it was got up with a view to win a reputation 

 upon which, by and by, to sell a more cheaply made article. 



We have, then, six remaining on the list, the names, prices and 

 composition of which are as follows : 



The price of which Containing per Per cent, of 



is per ton. cent, of soluble insoluble phos- 



phosphoric acid. phoric acid. 



Lloyds' $60 30 15.95... 



Bradley's 70 1.38 13.16 .. . 



Stagg's 65 3.19 16.16... 



Mapes' 60 3.93 8.64... 



Atwood's TO 5.75 10.38 . . . 



E.F. Coe's 60 7.91 4.96... 



Nitrogen 



equivalent to 



ammonia. 



..2.59 



..3.28 



..2.43 . 



..3.52 



..2.04 



..2.80 



Estimating the value of these severally, according to the scale 

 of prices named in the statute, to wit, six cents per pound for 

 insoluble phosphoric acid, twenty-five cents for soluble, and thirty- 

 five cents for ammonia, we find them as follows : 



Lloyds' $38.77 per ton. Mapes' $54.66 per ton. 



Bradley's 45.66 " Atwood's 55.49 



Stagg's.-. .....52.35 " E. F. Coe's.. .. 64.10 



