N. H. AGR. EXPERIMENT STATION [Bulletin 219 



TABLE NUMBER II. 



The calculated prices for nitrogen, phosphoric acid and 

 potash in the unmixed materials used in computing Table 

 II. are on the basis of the price of these materials delivered 

 to the consumer in bags. Therefore, the column in the 

 table headed, Difference, represents the relative amounts 

 which the consumer pays for mixing and filler in the differ- 

 ent grades. These differences show that it is economical 

 for the consumer to purchase the medium and higher 

 grades. The fact that the differences are not gradual sug- 

 gests that some other factor is involved. This factor 

 seems to be the unwarranted differences in price asked by 

 different dealers for the same grade of fertilizer. For 

 example, the figure in the Difference column for the grade 

 7-5-2 is $9.77 and is considerably higher than the other 

 figures near it. This figure is the average of two brands. 

 The one was offered for sale at $57.00 per ton and the other 

 at $70.00 per ton. If $57.00 be substituted for the average 

 figure of $63.50 in the column. Average retail price per 

 ton, the figure in the Difference column would be $3.27. 

 If $70.00 be substituted, the figure in the Difference column 

 becomes $16.27. These figures further emphasize a fact 

 previously mentioned in connection with the price differ- 

 ences in the 5-8-7 brands; namely, the consumer can only 



