11)02.] 



PUBLIC DOCUMENT — No. 33. 



03 



A comparison of the above-stated results of our inspection 

 with the results of the previous year shows that the manu- 

 facturer's standard or guarantee has been as well maintained 

 as in the past ; and in nearly all cases where a discrepancy 

 has occurred between the results of analysis and the manu- 

 facturer's guarantee, the commercial value of the article has 

 not suffered, the low percentage of one element of plant 

 food having been balanced by a correspondingly high per- 

 centage of some one of the other ingredients. 



The fertilizer bulletins become of the utmost value when 

 considered from the stand-point of a source of intelligence 

 to the farmer to select his fertilizer for the next year's con- 

 sumption. 



In deciding what brands of commercial fertilizer to pur- 

 chase for general use, select the one that will furnish the 

 greatest amount of nitrogen, potash and phosphoric acid, in 

 a suitable and available form, for the same money. 



Trade Values of Fertilizing Ingredients in Raw Materials and 

 Chemicals, 1900 and, 1901 {Cents per Pound). 



1<>00. 



1901. 



Nitrogen in ammonia salts 



Nitrogen in nitrates, 



Organic nitrogen in dry and fine-ground fish, meat, blood and in high 



grade mixed fertilizers. 

 Organic nitrogen in fine bone and tankage, 



Organic nitrogen in medium bone and tankage, 



Phosphoric acid soluble in water, 



Phosphoric acid soluble in ammonium citrate, 



Phosphoric acid in fine-ground fish, bone and tankage, 



Phosphoric acid in cotton-seed meal, castor pomace and wood ashes, 



Phosphoric acid in coarse fish, bone and tankage, 



Phosphoric acid insoluble (in water and in ammonium citrate) in mixed 



fertilizers. 

 Potash as sulfate (free from chlorides), 



Potash as muriate, 



17.00 



13.50 



15.50 



15.50 



11.00 



4.50 



4.00 



4.00 



4.00 



3.00 



2.00 



5.00 



4.25 



16.50 



14.00 



16.00 



16.00 



12.00 



5.00 



4.50 



4.00 



4.00 



3.00 



2.00 



5.00 



4.25 



A comparison of the above trade values for 1900 and 1901 

 shows a somewhat higher cost of organic nitrogen and ni- 

 trogen in form of nitrates, and a corresponding decrease in 

 the cost of ammonia salts. Phosphoric acid soluble in water 



