1901.] 



PUBLIC DOCUMENT— No. 38. 



57 



From a careful scrutiny of the results of analyses published 

 in the three bulletins during the year it becomes an easy 

 matter for the farmer to intelligently select his fertilizers for 

 the next year's consumption, always bearing in mind that 

 the fertilizer costing the least per ton is not always the most 

 economical fertilizer to buy, but rather the one that will fur- 

 nish the greatest amount of nitrogen, })otassium oxide and 

 phosphoric acid, in a suitable and availa*l)le form, for the 

 same money. 



Trade Values of Fertilizing Ingredients in liaiv Mateiials and 

 Chemicals, 1890 and 1900 {Cents per Pound). 



Nitrogen in ammonia salts 



Nitrogen in nitrates, 



Organic nitrogen in dry and flue-ground fish, meat, lilood and in high-grade 



fertilizers. 



Organic nitrogen in fine bone and tanliage, 



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 (Lu water and in ammonium citrate) in mixed 



fertilizers. 



Potash as sulfate (free from chlorides) 



Potash as muriate 



15.0 

 12.5 

 14.0 



14.0 

 10.0 

 4.5 



4.0 

 4.0 

 4.0 

 2.0 

 2.0 



5.0 

 4.25 



17.0 

 13.5 

 15.5 



15.5 

 11.0 

 4.5 

 4.0 

 4.0 

 4.0 

 3.0 

 2.0 



5.0 

 4.25 



The cost of some of the leading forms of nitrogen shows a 

 marked increase, as compared with the preceding year, 1899. 



The above trade values are based on the market cost, dur- 

 ing the six months preceding March, 1900, of standard raw 

 materials which are largely used in the manufacture of com- 

 pound fertilizers found in our markets, 

 list of such materials : — 



The following is a 



Sulfate of ammonia. 

 Azotine. 



Cotton-seed meal. 

 Linseed meal. 

 Bone and tankage. 

 Nitrate of soda. 

 Dried blood. 

 Castor pomace. 

 Dry ground fish. 

 Dry ground meat. 



Dissolved bones. 



Acid phosphate. 



Refuse bone-black. 



Ground i)hospliate rock. 



High-grade sulfate of potash. 



Sulfate .of potash and magnesia. 



IMin'iate of potash. 



Kainit. 



Sylvinite. 



Crude saltpetre. 



