22 



(d) That with a 33.7 per cent advance in price over the low 

 grade fertihzer the high grade furnishes about 97 per cent increase 

 in commercial plant food value. 



(e) That the mone}- difference between the average selling 

 price and the average commercial valuation in the high grade fer- 

 tilizers is $3.90 less than in the low grade goods. 



Table No. 2 shows the average chemical composition of the 

 three grades of fertilizers. 



TABLE NO. 2 



The above table shows : 



(a) That a ton of the average high grade fertilizer furnishes 52 

 pounds more nitrogen and 45.4 pounds more actual potash than does 

 a ton of the low grade goods. 



(6) That a ton of the average high grade fertilizer furnishes 

 34 pounds more nitrogen and 21,8 pounds more potash than does a 

 ton of the medium grade goods. 



(c) That with a 33.7 per cent advance in price over the low 

 grade fertilizer, the high grade furnishes about 49 per cent increase 

 in available plant food. 



(d) That the average high grade fertilizer, with about 26 per 

 cent advance in price over the medium grade goods, furnishes over 

 16.50 per cent more plant food and 36.1 per cent increase in com- 

 mercial value. 



(e) That the percentage activity of total nitrogen was found 

 to be 12.41 and the percentage activity of the organic nitrogen was 

 8.59 more in the high grade fertilizers than in the low grade brands, 

 indicating that a better quality of ammoniates is used in the high 

 grade fertilizers. 



(/) That on the whole the percentage activity of the organic 

 nitrogen in all three grades of fertilizer is somewhat less than during 

 the previous year. The difference, however, is not great. 



