1910.] 



PUBLIC DOCUMENT — No. 31. 



65 



The above table shows : — 



1. That the per cent, of nitrogen and potash is much higher 

 in the high-grade goods than in the medium or low grade. 



2. That with about a 32 per cent, advance in price over the 

 low-grade fertilizers, the high-grade furnished more than 60 per 

 cent, increase in available plant food. 



3. With about 32 per cent, advance in price over the low- 

 grade goods, the high-grade furnished over 80 per cent, increase 

 in commercial value. 



4. A ton of the average high-grade fertilizer furnishes about 

 43 pounds more of nitrogen, SVii pounds more of available 

 phosphoric acid and 99 pounds more of actual potash than does 

 a ton of the low-grade goods. 



5. The average high-grade fertilizer costs 151/0 per cent, 

 more than the medium-grade article: it furnishes about 22 per 

 cent, more jdant food and has about 35.5 per cent, greater 

 commercial value. 



0. The medium-grade fertilizers cost about 15 per cent, more 

 than the low-grade and furnish over 35 per cent, greater com- 

 mercial value. 



7. The percentage of difference between cost and valuation in 

 low-grade goods is more than double that for high-grade fer- 

 tilizers. 



