1910.] 



PUBLIC DOCUMENT — No. 31. 



55 



The above table shows : — 



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

 in the higli-grade goods than in the inedinm or h^w grade. 



2. That with abont 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 fnrni.shed over 80 per cent, increase 

 in commercial value. 



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

 43 pounds more of nitrogen, 5^2 pounds more of available 

 ]ihosphoric acid and 99 pounds more of actual potash than does 

 a ton of the low-grade goods. 



f). The average high-grade fertilizer costs l^l^ per cent, 

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

 cent, more plant food and has about 3.5.5 per cent, greater 

 commercial value. 



n. The medium-grade fertilisers cost about 15 per cent, more 

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

 mercial value. 



T. The percentage of difference between cost and valuation in 

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

 tilizers. 



