as its heat and light promote nitration which is really pJ^ ts for 



a process of cooking and also pre-digestion. When the 



plant food is cooked and prepared for use it is Nitrate, 7 

 hence Nitrate of Soda is in a class by itself, different 

 from all other plant foods. 



There are a great many sources of Nitrogen, such 

 as dried fish, cotton-seed meal, dried blood, and tank- 

 age. But none of these furnish Nitrogen in the Nitrate 

 form in which it is taken up by plants. This can only 

 be furnished to plants in the form of Nitrate of Soda. 

 Nitrogen applied in any other form must be first con- 

 verted into Nitrate before it can be used by plants at 

 all. 



Nitrate of Soda contains the Nitrogen that is neces- 

 sary for the growth of plants, and is the best form in 

 which to furnish Nitrogen to plants. When we say 

 the best form we mean as well the best practical form. 

 Nitrate of Soda not only furnishes Nitrogen in its 

 most available form, but it furnishes it at a lower price 

 than any other source, because 100 per cent, of it or all 

 is available. 



No other form containing so much available plant 

 food is also capable of unlocking the latent potash in 

 the soil. 



How Nitrate Benefits the 

 Farmer. 



Nitrate of Soda, from the stand- 

 point of the agricultural chemist, is a What J* itrat ® 



1^ p ji_j_i • £ -4. • Looks Like ; Its 



substance tormed by the union ot nitric chemical 



oxide and soda. In appearance it re- Properties, 

 sembles coarse salt. In agriculture, it 

 is valuable chiefly for its active Nitrogen, although it is 

 also a soil sweetener and is frequently capable of 

 rendering available potash in the soil. 



Commercially pure Nitrate con- What it is in 



tains about 15 per cent, of Nitrogen, Agriculture, 



equivalent to 18.25 per cent, of Am- 

 monia, or 300 pounds of Nitrogen to the ton. 



